I'm an active reader of threads on YC, and maybe I'm just lucky but I have yet to see anyone spouting MAGA based conspiracy theories. I did get downvoted one time for saying Trump invented the term Antifa (Which is absolutely true. I did a google search by date to verify.) but that's as close as I've seen.

I think you got downvoted because the term/group Antifa has existed in several forms since the 30s, it was a movement started in Germany in response to the rise of the SPD between WWI and WWII.

That I did not know. I just know no one was using the term online before trump started calling the BLM protestors antifa. (However, there was a single tweet with an #antifa hashtag 2 days before trump used the terminology. I figured he saw the tweet and it inspired Trump to pick up the term, but now I do not know given the historical back stop.)

Three year old article [1]. It was used in leftist circles a lot for a long time and especially in the last four years.

[1] https://www.theroot.com/white-supremacists-killed-more-peopl...

Google trends: https://trends.google.com/trends/explore?date=today%205-y&ge...

You gotta go father back than that article.

The downvote might be because the Antifa fact is inaccurate according to wikipedia:

https://en.m.wikipedia.org/wiki/Antifa_(United_States)

Just because it's not mentioned in Wikipedia doesn't make it false.