Perhaps the difference is important. Maybe not. Certainly the boundaries between "cinema" and "tv" are blurred with many people consuming most material via streaming. But maybe "series" can take more risk with the material than a "movie" just because the unit cost of a single "failure" can be amortized through the season if the the majority of episodes shine.

I believe it's the market/censorship dynamics driving this; films targeting China and India (which is most really big budget Hollywood films) have much tighter control because the target markets accept less.

Whereas streaming is smaller, cheaper, and targeted at more local audiences.