Does Mounting Famous Heads over Society's Mantle Really Make Us More Ethical?

I thought this was a reasonable question to be asked about the mob action to remove Kevin Hart from hosting the Oscars:

This brings us back to the question that’s been bothering me. What was accomplished by keeping him off the Oscars stage? Because Hart no longer stood by the jokes in question, the Academy’s decision to stick with him could not reasonably be seen as an endorsement of those jokes, or as a sign the Academy accepted them. So how does anybody benefit by keeping Hart from hosting the ceremony? Is the immense pressure supposed to function as a deterrent?

The notion that people must be purged from a given platform for past mistakes (often unearthed at key moments in their lives) seems to be quickly growing into a reflex and becoming our conventional wisdom, and that goes for both sides of the ideological divide. Is it the only reasonable consequence for these perceived transgressions? Is it reasonable at all when, in Hart’s case, a person’s views have changed?

I wrote this on Twitter in response to a different online mob action:

Dear World:

I was an immature idiot in college. When I was there, part of the appeal was providing a safe space to say or do stupid things so that one can test them out and find them wanting. All those who didn't do, say, or believe stupid sh*t at age 20 may cast the first stone.

I don't think I ever used force on someone or stole any of their stuff. I treated a girlfriend somewhat callously and apologized to her years later. Other than that, I am not sure I would even bother to apologize today for anything I said or wrote 35 years ago in college.

If you pointed it out to me I would likely say, "Yeah, that was stupid. I said and believed a lot of stuff then I don't now. So what? It used to be we didn't treat stuff coming out of the mouths of 20-year-olds very seriously for a good reason.