Again I have no data to back this up, so this is purely anecdotal - the amount of people I see sending re-tweets of probably-a-bot bullshit has me convinced that a huge part of twitter's "success" is built on it.
But now the "frog has boiled" and the humanity has long left Twitter. Practically every interaction between entities on Twitter now is generated by some kind of bot or script that you're essentially trying to communicate with nothing. If there weren't Twitter API limits it would consume more energy and data storage than all the crypto coins combined (slightly hyperbolic). I've left Twitter and I have no desire to return.
However, if Twitter decided to "embrace humanity" and use the API limit system (which already exists) for accounts to increase the value of an interaction they might have a chance to bring back that earlier magic. Scarcity would increase the value, and if you could only post 5-10 new tweets per day you would certainly spend more time considering what you do on Twitter and make it easier for Twitter to identify the sources of noise in the signal.
I find it OK, but I'm fairly selective about who I read and liberal with the block button. 500 follows on the regular account, 100 on the Eurovision one (more used for reading hashtags)