Hundreds of companies have tried to solve this exact problem for years and already did the cost/benefit analysis. It turns out that writing almost all of your code exactly once is cheaper than doing it in the multiple stacks that would be required with whatever your dream architecture is.

Right ... that must be why no website ever is trying push their mobile app on me, and why all complex software for developing, video and graphics editing, CAD, ... is implemented on web stacks.

You sound like someone with zero practical experience in this area [...]

You sound like someone who's replacable by ChatGPT.

[...] who just wants to rant ~~about code purity~~.

At least you got that (partially) right.

The rest of us are trying to get shit done [...]

Exactly my point: all you get done in web stacks is shit. And the trying is spot on: what do you really expect to come out the other end when the input is shit?

[...] while you pine for a perfect technology stack that will never exist.

I don't even have to do that, though improvements never hurt. Just take any C-Style language other than JavaScript or any other dynamically typed abomination of a scripting language, and you're bound to be happier and more productive.