100% you have been, you just didn't understand nor send the wrong message.
As a sidenote, working for a Corporation is not solely the bar for what people mean when they say working for Corporate. "Corporate" implies a larger organization that promotes policies developed under different circumstances to your work environment which minimizes liability and promotes homogeneity in all aspects of the working experience.
Sure, there are thousands of messages I can come up with that would be immediately fireable; but that’s true anywhere, not just in corporate life, and is thus a strawman.
Never once was I "one misunderstood message" away from getting canned. I would have quit immediately if that were true. I understand not everyone can quit, but more people can than do.
Nobody deserves to work under that kind lack of of psychological safety, and certainly anyone on Slack and not in a factory has more of a choice.