It really doesn't exist. Certainly not in the form we'd view as the peak 10-20 years ago.
Move to mobile over desktop (and partly laptop) has definitely changed how we consume online. Or at the very least how the people here would. I'm guessing most of us probably do most of our browsing on a phone now and only get out the laptop or sit at the desktop for something more involved. Whereas in the past me I'd do most on desktop, eventually moving to most on laptop.
My attention span these days is totally fucked. I won't lie, I haven't read your full post. I may return and read it in full at some point, but that's a problem I currently have which I think has been partly caused by the "scrolling" nature of social media these days.
Next post, next post, quick dopamine hit, forward that reel to my gf, skip that. Just letting the algorithm feed me nonsense rather than seeking out interesting things I want read/consume/enjoy.
I used to pride myself on not falling for the "short hit" side of social media - I avoided Tik Tok, Twitter and while I watch a lot of YouTube it's mostly long form, useful, content.
But I won't lie - Facebook Shorts has utterly got me. I can easily zone out for ages just scrolling through, frankly, mindless shite.