He was bang on with his assessment of the average getbig member tbh tbf
The problem isn't necessarily intelligence. People lack the foundation to separate bro-science from research accepted as fact.
For example: Blaha talks about natural testosterone level fluctuation not affecting muscle growth. It's wrong, but he's not educated enough to understand the science so any discussion would be a waste of time. The statement is 'true' (for him), regardless of it ignoring testosterone's part natural function in growth.