My take on it, without watching these videos (but having seen a lot of his prior content):
He's probably making a lot of this stuff up. My perspective is probably colored by Boogie2988's rather-public exposure as a massive liar, which suddenly lowered the bar for YouTuber/Twatter behavior, but evidently Rudy's mother twitted his fucking... TIPPLES!
He's perhaps a year or two late to suddenly develop schizophrenia, but his "PTSD" could very well have been early signs of the paranoid variety.
I don't think the magic mushrooms caused this, but that's because I understand more-regular drugs better than the shrooms (from Health class in high school). Typically you build up some sort of tolerance, and that makes your subsequent episodes less pronounced? He might have experienced an "ego death" from taking these things while his brain was out of serotonin, though. That would (at the very least) cause a mood swing making him think posting this stuff was a good idea.
But back to the TIPPLES: he's trying to make himself look pitiable, because he knows he typically looks like an idiot who was raised with some money and jacked around with it. It's a very... liberal/Marxist way of acting, but Rudy has already admitted that he thinks like a Marxist and is just being a right-winger out of spite.