After seeing this post, I tried streaming the newest episode of Silo and found it wasn't working in my addon (which uses a4kscrapers).
My mother tried streaming Slow Horses (using same addon) after I told her and she said it worked fine. I guess it had already been cached and was therefore unaffected since the file I streamed was only released today.
Anyway I luckily only had 8 days left of RD, so I subscribed to Premiumize and it only took a minute to reconfigure the addon to use that instead.
Despite the headline, the length of cutscenes wasn't their justification for the length of the game, just a separate question.
It's going to be a story-driven action game, of course it's gonna have hella cutscenes but from what's been shown so far, I'm actually looking forward to it.