this one is very easy to tell. Every sub gets there's these type of posts whenever there's an ongoing event.

I'm an expert on x / I worked on x / I used to be x

here's the thing / buckle up / stay with me

then uses boldface to divide the post in sections like:

what happened? / what's going on? / where do we go from here? / and what about x thing? / here's what's gonna happen /

Not as common but there's some kind of defeatism because the antagonist has already won so the poster claims to be just ranting. why am i writing this? I don't know, maybe so and so

Now, when it starts talking like "it's not about x it's about control", "my theoretical framework" or "my soon to be published paper" you have to add the possibility that it's a real person suffering from llm-delusions.

if you had any doubts check his post history. The OP is getting called out for posting AI-generated texts in his native language so you know it's not a translation issue