Twitter still maintains a critical mass of users and corporate accounts, but all the most talented creators (at least the ones I followed) have reduced their Twitter usage substantially or moved on completely.
Eventually new readers will stop showing up because there is no worthwhile content.
For me, Reddit and Twitter are simply not worth visiting using mobile web or first party apps because the ratio of crap I don’t want to see (ads and promoted content) is too high vs the content I came to see.
YouTube is going the same way, I use multiple adblock rules to hide “shorts”, “people also searched for”, and “people also watched”. I pay for YouTube premium but feel like a mug for paying for a service which tries to force feed me content I don’t want. I’m on the brink of cancelling the subscription.