Maybe it is happening in America, which is very puritanical, but my feeling is that when people highlight elements that would not be accepted today in historical people, the goal is not to paint them as the devil, but to understand that nothing is all white and all black, and help learning to have a smarter approach to history than those lazy "heroes vs bad guys" depiction.
> But his reputation has been harmed like almost anyone who's been in the public spotlight for long enough.
These kinds of affirmation are really easily the result of the bias. You see a lot of public figure in the spotlight having their reputation harmed, but you don't notice the ton of people who are just "normal" or "not unlucky" that are not and will never be harmed.
For example, it is true that when Trudeau dressed in black-face, it was not such a big deal. But then, the probability of dressing in black-face was still very small. How many innocent people just dressed in black-face just for an innocent joke at the time? So, people who are "unlucky" are statistically a minority.
As another example, behavior like Stallman or Roiland are not "normal". "normal" people are just not that abusive or inconsiderate. So, people who are "not normal" are also a minority and to some extend even deserve it a little bit (they should have known better than being jerks, having their reputation harmed for being a jerk is not a bad thing, it is a normal consequence).