I have (had?) plenty of friends on Twitter who loudly proudly boycotted the Harry Potter game due to JKR's comments about trans people.
But they’ve stayed on Twitter despite its horrible owner and how he runs things.
I’m willing to give a pass to creators who make a living off their online audience. If the audience went off Twitter, so would they.
Everyone else, though? I don’t ever care to hear about what they're boycotting again if they can’t pull themselves off Twitter.