This is quite the display of unnecessary credentialism. It’s a blog. A nicely-designed and seemingly useful one at that (I’m finding this post on IBS to be a handy summary and pointer to studies: https://trevorklee.com/a-complete-guide-to-self-diagnosing-a...).

From what I can tell, this is a humble, curious, and well-meaning guy that funds his menagerie of research interests with a successful tutoring business (a noble career in and of itself). I see absolutely no need to frame him as an unworthy crank.