No, I'd not exclude you. You've shown the ability to debate my arguments and opinions, rather than attack me personally and try to get me fired and generally ruin my life. As for "definitive line of reasonability", it's not black and white. I think we can at least start with people being allowed to voice their opinions without having their lives ruined, and that cancel-culture should be restricted to only the intentionally rude, demeaning and discriminatory (or the obstinately ignorant and inconsiderate). Folks should have a chance to explain their positions , to be corrected (where warranted), to be educated and to have an opportunity to apologize in good faith rather than have their employers panic and fire them.
What sort of consequences did they face? None from their employer. They (and the university) are being sued, and this will be a precedent-establishing case and (hopefully) a warning signal to overzealous academia. We'll have to wait and see, but I don't expect much.
They have a point, and I'll argue to support it where I feel it's warranted. I can agree with Donald Trump on certain issues, though I loathe the man himself and think he's danger to humanity.
I don't even know where to begin on how we fix things. I can't speak up myself publicly. Most people can't. It's going to require a bold stand from self-reliant (privately wealthy) public figures and probably a good number of martyrs to start making any meaningful change. Barring that, the alternative is a culture war, as you've said before. That will likely work itself out eventually, but at what cost?