It's not entirely the fault of developers that we are in this state, where they follow every "fad" (if it's a fad). People get paid better when they do modern tech, especially if they do slightly mundane work, e.g. apps that boil down to forms and CRUD, that have a lot of detail to get right, but aren't that challenging on its own (they often end up being). I remember about 10 years ago, I did a bit of Angular in some projects and there was a client that knew that and insisted I was working for them. I even heard my boss on the phone once saying "yes so and so is not the only one that does Angular". So I had it good just because I dabbled in tech that was hot at the moment. Other devs also want to be in that place so they follow the trends.
It is partially the fault of developers because they do their best to make this field what Alan Kay calls "pop culture and not really a field". I spent recently a lot of time questioning certain tools we use that I consider useless for us, but it's "standard" because someone else uses it and it spreads around because again you don't want to be left behind in your CV. For a lot of people the most important is to check all the tech boxes (spa, docker, kubernetes, cloud), but that the actual product is poor is less relevant. The outcomes are poor because a lot of this stuff is actually really hard, but if you take that approach it will take you forever to really master all the details of your craft. So instead you make it barely work on the happiest path and you've shipped your app as a full stack developer.
I don't know the solution, but articles like these are a good start.