I really didn't want to write this but it's absolutely everywhere and there's a lot about it that makes me uncomfortable.

I think it's about time everyone grows up, while I understand that people will be upset that the creator of their favourite thing is really a bad person, the things they created are fiction, it's a story, it's irrelevant in the bigger picture.
The success of every creation is not entirely down to one person either, it's a pyramid of succession that goes through everything from TV series to merchandising made by a couple thousand people, it's a million dollar, sometimes billion dollar business that's already made it's mark before these horrible things about the creators came out, there's enough fans of each property who are oblivious to the controversies and they will still buy said product, this doesn't mean they are against some movement, they just want to read about a bespectled wizard boy going to a wizard school, a wandering samurai hoping for redemption or a drunk grandfather and his grandson hopping through the multiverse.
They couldn't care less about the creator.
What do I think of the three creations in question?
Harry Potter is fine nothing special, I wouldn't go out my way to buy an $80 video game about it when my money can be better spent on feeding myself decent food for two weeks.
Rick and Morty is just a slightly smarter Adult Swim show, the humour gets old very quickly and it's not as smart as it pretends to be.
While I do like Rurouni Kenshin, the anime was a mess, the prequels were beautiful but the TV series was messy, the motion picture was bad and the sequel was cringy, as for Busou Renkin....

The less said about that monstrosity the better.

One thing that does make my blood boil is harassment of any kind against people who consume these media pieces without fuss.
Someone actually made a program to track down people who streamed Hogwarts Legacy and streamers have been bullied for daring to play it, it's a disgusting practice that I'm pretty sure is also illegal.
I speak as someone who spent their teens and twenties being bullied out of 90% of my interests.
If you can separate art from the artist, that's great.
If you can't separate art from the artist, that's fine but don't harrass those who can or take a neutral stance or are oblivious to the issues.
If you really want to bring attention to the issues you feel so strongly about then turn that energy into something more positive, give to a charity that helps victims of vile crimes, go comfort a friend who needs you, volunteer at a soup kitchen, plant some trees, do literally anything else other than hide behind a keyboard and Twitter just to get angry over a piece of fiction!
As a New Zealander once said.
"Be respectful, be wholesome, don't be a manus and I'll see you next post"