The goal of a company is to serve its customers and make a profit, not stroke managements egos.
And it sounds more like this guy pointed out what was wrong and maybe embarrassed people, but that doesn’t make him an asshole. It’s one thing to be mean or call people names, that’s an asshole. But this guy was an “asshole” because he was right and it embarrassed people? I’ve seen the type of management that is so insecure they can’t be pointed out what they are doing wrong, sounds more like what happened here.
A good company has management that has a thick skin and acknowledges its missteps and raises up talent. If you can’t admit an employee “lower” than you can point out your flaws and give you criticism, then you’re the problem.