It's good to stay away from this sort of dismissive language. I'm a so-called "serious engineer" that's spent most of their career working on compilers and embedded OSes, designed and implemented a production JIT compilers, and a wide array of other stuff some people might characterize as deep magic.
There is significant complexity and depth to front end tooling these days, and I consider my colleagues working in that space to be as talented and experienced as anyone else.
The issues in the frontend space seem to me to arise as an artifact of the fact that the work they produce is far more visible and directly evaluateable by non-technical people. The demands they have placed on them to deliver features quickly is far higher. They're far closer to the user-experience side of the product than most backend devs. And they have to deal with a tools ecosystem that evolves and changes far faster than others.
Trying to describe that complex issue in terms of stratification of developers into "serious engineers" and "not serious ones" does a disservice to the underlying problem, and doesn't help address it.
