Michael's biggest problem is an instant hostile reaction when confronted with something that doesn't line up with his "well-educated and researched" perspective. A prime example is rocket-firing Boba Fett:

https://archive.org/details/tomarts-afd-20/mode/2up

They first showed up in the 90s, but that's also when people first started making counterfeits of them. That's also the one single figure that 99% of all Kenner employees who risked their jobs by stealing test shots and production samples for singled out the most as if they magically knew future values over two decades later. But today Michael and others like him will claim "they're all legit" while selling for insane amounts of money............while defending modern bootleggers like Chris Chan.

All while getting pretty nasty and insulting with those who confront his version of reality.