Also I actually have less of an issue with other people buying Gaiman’s work. I have no love for the man and won’t buy anything myself again, but if you buy something of his, the money goes to him, and stops there. Rowling directly funds bigotry; the money people spend on Harry Potter is in a direct pipeline to funding the suffering of innocent people.
At the very least, before everything happened with Gaiman, he was known for having positive philanthropic ventures. Even if you gave him money, a sizable portion went to him, another portion went on to better the world. I’d presume he still supports these trusts and charities too.
Without arguing politics, the world is sliding very quickly towards facism and being on guard against it is incredibly important. I’m not buying a laptop and putting money in the pockets of someone who may then donate to or fund facism. None of that applies to a developer of a free open source software whose political ideal world is not rapidly approaching.