Just found the r/enoughpetersonspam Reddit, and there's lots of threads where people are pointing out similar examples:
https://www.reddit.com/r/enoughpetersonspam/comments/8so2is/dont_get_caught_in_jordan_peterson_lies_about/
r/askphilosophy are also calling him out for not understanding what...
I couldn't find any other articles on psilocybin smoking cessation either, please link those. Even if they haven't checked for mystical experiences, I don't think it matters - ultimately we want to know whether psilocybin is effective, regardless of mystical experiences. One open-label trial...
The fact that you are having to try and fit what he says around what you think he means demonstrates some of the points I was making. This is one of the criticisms of him - he's sometimes very vague and it allows what he says to be interpreted in different ways.
There simply isn't the evidence...
He's a bit of a jack of all trades and master of none, displaying superficial knowledge in many different areas, which has been criticised by actual experts in those areas.
The examples are numerous. You can probably find lots with a bit of Googling.
Here's a very basic criticism based on this...
I've seen a bit of him. He often says things like "the evidence clearly shows" (without giving specifics) a, b or c - and his supporters lap it up because they don't know any better and assume he knows what he's taking about - but when you go a bit deeper and look into what he has actually said...