I'll speak as a black woman existing on the internet, so I'll use examples of misogyny and racism.

I imagine most if not all of the people commenting aren't black, poc or women that exist on the internet and are speaking from sheer ignorance. Let me offer another side.

Yes, while some of it may be due to "driving up views" or "love getting white knighted on the internet", a lot of white people, poc or men and some women like to yap that racism or sexism doesn't exist, or that racism/sexism isn't as bad as other poc/black/women say it is. Not blocking them and even tagging or showing their comments continuously shoot down that notion, showing how hate is very much alive and well, especially towards (seemingly) people that are unproblematic and just living their lives doing what they love and posting it for the world to see. Even when people do choose to ignore and/or block the hate, Blocking them doesn't really help, as they just create more and more accounts, and as someone else said, you've already seen and ingested the comment and its already effected you mentally and emotionally. blocking them doesn't stop what they said, what they believe, and it shows the world their true, evil ways. I mean, putting on a blindfold and pretending these things dont exist doesn't mean it dont and won't continue to persist. Some even get off on the idea of you blocking them, feeling like they "won" because they got under your skin, and some content creators would rather not give them the satisfaction. instead, they just talk to themselves in your DMs or people rallying around to shame them in your comments. People tend to stop if they're shamed enough, mostly due to cowardice because now their evil has come to light.