In your opinion what is the “really bad thing” that React/Angular have resulted in? Is it just the fewer full stack devs? I mean I’m a full stack dev still whil

In your opinion what is the “really bad thing” that React/Angular have resulted in? Is it just the fewer full stack devs? I mean I’m a full stack dev still while using Vue. But also specialization (at a certain scale) is nearly unavoidable.