>Listeners are perfectly free to go elsewhere to hear racist speech — Gab exists, 4chan exists, and there are plenty of smaller sites dedicated to this as well.

Haven't various hosting and mirroring platforms refused to service some of these websites? I recall Gab in particular running into some trouble on that front.

>Insofar as they want to support someone monetarily, no one can prevent them from using Bitcoin.

Except for Bitcoin being non-convertible into legal tender without going through... oh look, a privately-owned payment processor.