Dune gang rise up!

At that point you're someone standing next to the dude in the "I ❤️ HP" shirt. Supporting a fandom that is owned by bigots is still not great. At the end of the day you're perpetuating it's existence.

It's not nearly as bad, but it's not good.

If you absolutely must read those collections of poor writing and thinly veiled racism, you can get them from a used bookstore as well. The point is to not give fuckface money

It's kind of muddy and depends on your personal beliefs on how much you think interacting with a terrible person through uncritical devouring of their works is likely to taint your own worldview. Various factors include how many people were involved, did they have the views at the time, are you capable of reading the text in a manner where you seperate yourself a bit from it, etc.

I don't think it's worth the risk personally, but I tend to view art as a communication from one person to another, rather than a commodity or a consumable. I don't particularly go out of my way to communicate with terfs who are immune to critical thinking. Also if we get down to brass tacks, it's not that good of a series.

The only risk you have is that someone will see you playing a Harry potter game, or reading a book, and they will then go and buy it. If you pirate it just keep it relatively private if you really want to make sure jk Rowling doesnt benefit in any way.