I’d say your case is different from the general one :D

Even without knowing how much you make on Medium, I think it makes sense for you to be there. You have a great niche and domain expertise (movies/cinema if someone’s wondering).

I don’t see the topic getting 1,000 paid subscribers, but maybe 100 / a few hundred is possible. That’s my feeling.

In other words, I think it makes a lot of sense for profiles similar to yours to be on both platforms. Repurposing content for the win!!

Fingers crossed for you :)