-No actual hard evidence.

-Ex and current staff members have replied and said what he's saying is bullshit.

-Interview posted and comments being made, just before Obsidians next game comes out.

-This all happening on RPGCodex who practically worship the guy.

-Gets angry and defensive when people are suspicious. 

-Nearly every comment he's made is filled with emotional angle, shows bias, and misses key context.

-Multiple people have pointed out that he doesn't seem to actually understand how businesses and contracts operate, enough to be saying what he is about them.

The only way this could be MORE suspicious, is if he wore a fake nose and glasses and introduced himself as Mr Totally Truthful the Third.