Ultimate Warrior was literally voted as the Wrestling Observer's worst wrestler of 1988, despite being massively over. It's not like he wasn't without his detractors even with commercial success - Hogan was the same, without even taking into consideration their shitty real-life personas.
While I think years will be much kinder to Mox's AEW run than Hellwig's entire damn career, I don't think it's out of line, as long as we keep the criticisms within the realm of professional wrestling and not dwelve into weird, freaky personal rants, to criticize someone's body of work. I think that just comes with the job.