One thing is framework hopping, which one can decide to do or not do.

The problem here is that even staying within the same framework it feels like you're changing it every 6 months. Look at Next (pages vs app router) or Remix (now react-router).

There's literally zero stability and you need to rewrite everything constantly.

The worst part, as it happens at my job, is when you have people newer to the industry that think that if you're not on the latest and coolest then "everything is shit" and they live in this mindset where everything has to be rewritten constantly or otherwise they cannot be happy at work. Fuck your users, your product and everything else. Latest cool trend is the only thing that matters to them.