How many files do you have? I've got 26000 files in my Mac's dropbox folder. (Granted, very few of them change more than once or twice a day; maybe 20 or so of those do.)
IIRC, there was a variable, hard limit for objects in a folder or locks in a folder where it would go wacky.
Docker (3.13) Dropbox (2.08) Outlook (2.03) Safari (2.02) Slack (1.57)
Total 131771 files currently on disk (I'm using Selective Sync, because SSD prices)
EDIT: Clearly not just me: https://news.ycombinator.com/item?id=12464901 (thread from 2016)
If this was your intent, then using the tired "worse is better" trope and claiming an issue from 7 years ago, that no one else has claimed to have seen is seems a far cry from it.
Dropbox became popular because it was easy, it worked, and did exactly what it said it did. That might be "dumb" in that it's not feature packed, but you use a lot of negative connotations when none are required.