Absolutely, and I am not defending Gruden, just stating some opinions I have with cancel culture stuff.
That said, is this really even cancel culture? These emails were turned up during an investigation unrelated to Gruden. It's not like the Twitter mob discovered them to run him out of town. And then he resigned. I think he could have maybe survived this had he decided to stay and the team kept winning, but he made the right decision for his players and coaches. It would have been a major distraction.
You can probably make a case either way if this is cancel culture or not. I'll just say that there is no way that Gruden would have been able to keep his job in the current environment of the NFL. He was likely given the choice to resign or to be fired.