Indeed he is engaging in the discussion. I misunderstood what he originally wrote.Looks like he's engaging in a discussion in this thread to me.
This is the "extra dramatic" ethical dilemma I mentioned above. I don't approve of this public representation, yet I do firmly believe/know that what they are distributing is great if mysterious stuff (albeit inconsistent). And purchasing it directly or indirectly funds the valuable research that is occurring to validate or revise the bold, apparently contrafactual claims made by other principals, as necessary basis for implementing the Good Manufacturing Practices that will bring consistency and the possibility of more meaningful safety research.
I don't see the chemist as endorsing the website claims, by the way. That would be unseemly for a scientist. Even investing in a reference standard of psilomethoxin presumes you know what you're looking for. It's more appropriate first to find what's in these mushrooms that accounts for the unique effects apparent in bioassay.
However, he isn't simply a chemist. He is the Head Scientist at the Church of Sacred Synthesis. So there are ethical and legal issues with his words and actions (or lack of them) regarding the churches statements and operations.