The famous story of La Chorrera is that Dennis is the one that went seriously off the rails but it's Dennis in some of his public statements and book that cast skepticism on a few of Terence's ideas

What you shouldn't do is just willy nilly tell people to take things. If the article is right about that, it's disappointing. I always saw him as being very academic and quite in tune with the dangers of outright recommendation (perhaps in contrast to Leary but I don't want to misinterpret Leary)