No evidence that "most straight performers don't want to know that."
David Perry is not a dick. Alex Jones is not a dick. A bunch of other performers aren't dicks to male fans regardless of orientation.
Some people may get off on the idea of findom, so let them. But polite customers should always be treated fairly. Asking about age or if they're still in the business is relatively harmless questions. They could choose not to answer. They don't need to punish a customer/viewer for being curious.
It's a different thing if they are being harassed and need to protect their mental health. In that case blocking is acceptable and justified.
I don't understand why you're trying to defend his despicable behavior.
Exactly