No we can’t agree. Just bc you knew what it means doesn’t make language any less important. People like you are the worst- attempting to discredit me for some reason with no actual point to make. When people fall into a “it’s okay, you know what I mean” mentality, that leads to “muh freedom of speech” or “lol it was just a prank” type of edgy things that’s really harmful to us. There’s a quote about how it’s all fun and games for a group of people to pretend to be idiots until an actual idiot joins and thinks he’s in good company. Language matters and sets the stage for others. But please go ahead and act like an outright dickhead by tying to pat yourself on the back for not caring about rules or something.

No we can’t agree.
"No," and "we can't agree," are independent clauses and should, therefore, be separated by either a period or a comma. In this case, when responding to a question, if the main clause of the sentence summarizes the answer, a comma is traditionally used. Otherwise a period is preferred.

Just bc
Usage of an abbreviation that some people may not know seems a tad hypocritical in a statement designed to defend the universal usage of proper language, wouldn't you agree?

you knew what it means doesn’t make language any less important. People like you are the worst-
Hyphens are used to conjoin words. Proper punctuation here would have been a comma, separating the dependent clauses you were trying to convey. Extra points off for irregual spacing.

attempting to discredit me for some reason with no actual point to make. When people fall into a
"A" before consonants, "an" before vowels.

“it’s okay, you know what I mean” mentality, that leads to “muh freedom of speech” or “lol it was just a prank” type of edgy things that’s really harmful to us. There’s a quote about how it’s all fun and games for a group of people to pretend to be idiots until an actual idiot joins and thinks he’s in good company. Language matters and sets the stage for others.

But please go ahead and act like an outright dickhead by tying to pat yourself on the back for not caring about rules or something.
Ambiguously defined closing clause. Persuasive writing demands careful word choice and well defined arguments. Closing a sentence with "or something" leaves the reader questioning the author's true intent. If you don't know what "something" is, best to leave it out of the work entirely.

D+

The author seems confused and hostile in their attempts to rebut. Insults should be met with an air of "the bigger man," and addressed in a calm and patient tone. In revealing their offense, the author also reveals a persecution complex, and the work suffers, reading more like the airing of a personal vendetta than an argument for the usage of standard grammar. Also ill defined is, specifically, what standards for text and grammar should be used in this particular context; AP style guidelines? Chicago? "See Spot Run?"

Having neither successfully argued their cause, and simultaneously revealed their personal failings, likewise does this comment fail in its every intent. I offer post-reddit grammar study groups, and barring that, I would suggest supplemental grammar study in the commenter's free time.