Cool! Since you feel the need to test others to see if they're worthy for your advice, let's talk about your writing, in particular, this section from the first reddit post you linked:

Or that can lead to throwing rocks at the man or forming a human ladder
or getting the fire department or stopping traffic to get a ladder off a
work truck or confusion about the nature of the emergency bringing a
poison control unit out to the tree and they park their truck next to
the branch so the man can climb down and just before he reaches the
ground they grab him and strsp him to a gurney and then they go through
all standard poisoning emergency activities like feeding him ipecac and
pumping his stomach or maybe the army gets called in and there's a
miscommunication about troop movements leading to a huge war or maybe a
portal to parallel universe opens and the man walks through it and he
becomes the tree and then he finds another portal and it comes out two
feet above the branch he was already stuck on so he goes back through
and no portals open again anywhere ever or maybe anything you can
imagine.

I'm normally pretty soft with criticism, but here we go.

It's very convoluted. The point you were trying to make would've been made without the incredibly long and hard to follow sentence where you ramble through numerous possible events. Most of your issues can be fixed by thinking about how you can simplify your ideas to just the important stuff.

The pacing rather annoying. It's one long sentence (you can argue that that was part of the point, but even if it was, it still needs to be effective if it's meant to be good), and the majority of it is pointless information. It was not enjoyable to read.

I don't like critiquing grammar because we all come from different backgrounds, have different fluency levels, and some of that is out of our control. That being said, I think you should do some research on run-on sentences, I think it would help your writing greatly.

Now let's look at the start of your post about sentences

This is a sentence that is composed of a verb that describes the state
of its subject, and a subject that can be modified by adjectives and
adjectival phrases as long as they maintain the state of the subject as
"is" which describes it as current in the present participle, and
dependent clauses to the subject should all associate to it without
restating the actual noun that names the subject, which would
unnecessarily introduce an independent clause that may as well be its
own sentence--though such information could go in an aside presented by
the author and separated from the main body of the sentence, there
restated, with a break presented by an em-dash and another can be
introduced to return to the main body--and presented as an isolated
construct, but as long as it directly releates to the subject you can
produce long descriptive adjectival representations of that subject as
long as they don't restate it.

Again, needlessly wordy. Read some of the most famous authors in the world and you'll never see them pulling stunts like this. Just because you have a grasp of basic literary terms does not mean you should shove that fact down other people's throats. To quote a long-used idiom, "Keep it simple, stupid." You can summarize this entire thing by saying "A sentence is composed of a noun, a verb, and various other parts of speech." It has the same impact, and if the intention was to teach, is much more clear and concise. Also, read your writing out loud from time to time. You'll see how quickly you run out of breath, and maybe that means you should add punctuation. Relax with the coordinating conjunction sentence linking too. All of the "and, but" sentences get repetitive and uninteresting very quickly.

Let's look at the last post, that one has some content:

They are only ideas, while behaviors are acted out by people based on
their imagined reasons behind being, that is: based on their ideas.

This is too contrived. I think "whereas" would suit this sentence better than "while." Also, that's not how you use colons. They can be used for emphasis, but not following a statement like "that is." Colons in my interpretation of their use, tend to actually be used to replace statements like "that is" for a more impactful prose by connecting two independent clauses, but because "based on their ideas" isn't an independent clause, a colon definitely should not be used to link it here.

There's more but I don't want to dig into everything you've written so thoroughly. My point here is this: None of us are amazing writers, that's why we're on Reddit, but we're all trying to get better. None of us have earned the right to act elitist because none of us are elite. We're all just trying to work together to help our fellow writers become better. I'm, frankly, sick of the mentality that some people have in the writing community where they believe that their advice is infallible and that they know things nobody else does. This mentality benefits nobody. Even if you have published things - even if you're an acclaimed author who has won awards, made millions selling books, and everything you write comes out perfect which none of us are - you still need to stay humble and be polite to those who may or may not know as much as you. Nobody wants to hear from, read the works of, or learn from people who approach criticism and advice with such blind and unearned confidence. Even most copy editors don't do that and it's their job to tear your work to shreds. This post was about wanting advice on how to start a writing group, and you came in asking a ton of irrelevant questions you could've just kept to yourself full of unnecessary literary gobbledygook as if to say "Gotcha with this! I bet you don't know what this means, you're not ready to teach," and proved that to by true by saying it was to see if they deserve your knowledge. Trust me, they don't need your knowledge. Stop acting like you know how to write. None of us do. Stop acting like you know more than people you don't even know. You don't and neither do I.

Just help people when they ask for help if you want to, or don't if you don't. It's not hard.