Honestly, the hyper-fast thing is a trend that's likely not going away anytime soon.
I know the first thing that comes to mind is probably Tiktok, when you think of this, but that's only part of the story. I dont know if you use Youtube much (it's my primary source of video entertainment), but on there, there's a very... distressing trend that has appeared on there. It is called a "content farm".
Content farms are typically extremely low effort, high engagement (read: hypnotizing). A lot of screaming and colors and movement, high saturation on EVERYTHING, lots of flashing, very frequent scene transitions, and did I mention the screaming? The more of this that happens in a short time, the more hypnotizing it is, particularly for kids (but dont think that adults are immune to it!)
And these things are just... hideous. And I mean that in multiple ways.
If you're curious about what they're really like and how they work, have a look at this:
Note also that there's a lot of hijacking with this trend... it's never anything actually new/creative, it's always playing off of something that is already there. On Youtube, this means latching onto characters that are popular on the Net (often from things that are not designed for kids), and just farting out video after video "featuring" that character. Not exactly with any permission from whoever owns said character. And some of it can get really disturbing. I'll put it this way: For anyone who has kids, DO NOT let them onto the "Youtube Kids" section of the site. It is supposed to be for children. But there's a ton of deeply messed up content on there, which is able to sneak into it due to the absurd volume/rate of uploads on that section of the site (which makes it very, very hard to moderate).
What makes this even worse is that Youtube does not have the purely short-form restriction that Tiktok does. Tiktok is ONLY shortform stuff. But a Youtube video can take just ONE of these and stretch it out into an hour of utter nonsense. So that's a ton of screaming colors, but WITHOUT the need to even swipe, and without having to leave the channel that is producing it.
And with Hollywood, well... execs look at stuff like that, see how it works, see WHY it works, and of course since it makes money (and oh boy does it ever do that), they'll do whatever they can to implement it.