Colin Kaepernick lost his job. He was canceled by the Right. I don't know by what standard you say he was "rewarded." Who's he playing for next year?

By "prevailing sentiment," you mean in some media and some places. He's a pariah in Red states.

If your point is that only the Left jumps on inadvertent offenders, who are then forced to apologize, I agree. That does seem to be a Left-only thing. The Right doesn't whine about microaggressions, because on the Right, intent matters. But cancel culture goes beyond inadvertent offense.