I'm torn about this. On the one hand, Patreon shouldn't have to do business with people they don't like. On the other hand, at what point do we accept that we have different viewpoints and live and let live? The biggest one for me in recent history was Cloudflare arbitrarily deciding to stop hosting the Daily Stormer. Sure, DS is vile, but at the point we start enforcing censorship on a whim instead of hardened polic…
So in the end a company would be put in front of a choice: either choose what to allow and reject, and become legally responsible for everything that is published; or act as a neutral intermediary and assume no responsibility for the contents. Sounds fair?