I don't know if it's the platforms, the users, or both, but it just annoys the ever loving crap out of me that cloud storage is basically used like a digital junk drawer.
There's this article about how Gen-Z doesn't apparently understand how filesystems work which kind-of, maybe, explains things a bit. Again, I blame tech for that.
Even with search, I can't find half or more of the files co-workers swear are in there.
And I know they know how to put things into folders. We were using an on-prem fileserver until 4 years ago, and they filed things just fine. Now files just go into a "bucket" and they expect you to rummage through it to find what you need.
What I dislike is how Google drive changed the default home page to a "helpful" version where it suggests files that it thinks you want. I assume it's in response to the issue you mentioned
I keep my folders organized nicely, and I like knowing where to find something. If I need something often, I'll add a shortcut to the front page, or bookmark the file.
A page that randomly updates day to day is useless for me
Yep, it does that. I just have a bookmark to my "main" folder which is one level down so I can skip the "homepage".
The "Shared with me" section is just as bad, though (thankfully) it doesn't have recommendations (yet?)