I’m very curious what makes you believe that you have the answer all of these coaches don’t have. Experience alone does not make a better coach, and there are multiple coaches that are likely much more experienced than you at the highest level anyways.
Another problem you clearly have is the way you convey advice. Being a coach is more than simply understanding the game. While you might have a deeper understanding of the game, the way you express yourself comes off as arrogant, abrasive, and faux-intellectual (the obvious example is your previous guides). You have a lot of confidence for someone with a lacking resume who has never gone pro before.
I'm curious why you would get backlash for outing a player you coached. It’s easy to claim experience and insight without giving any proof whatsoever.