So, he's a douche. If you asked politely, why would he block you? From what you're describing, there is absolutely no reason why he should have blocked you. If I may ask, are you still a fan of his?
A similar thing happened to me when
a model blocked me for simply telling a fan in reply that his JFF (unlike his OF) was no longer being updated... And the information I gave was correct!
And that model has now
blocked another fan.
And this fan below was blocked by a model and then shamed in a livestream for simply, politely telling them something in DM in regard to DRM. And there are even more such examples.
OnlyFans videos now defaulting to DRM/streaming
Technically speaking, models can block whoever they want for any or no reason, but blocking a fan, esp. an actual paying fan for no valid reason is just stupid and so disrespectful.
Models that block fans for no valid reason like that don't deserve any subs, to be honest. I was considering joining Steven's portal for a month to see what's there, but I won't after the experience you've shared.