Do you think it's a coincidence that some of the most used and loved desktop applications lately are written in JS/HTML? import_pkt_ws_btc_deribit_v2.py Could it be that it's extremely hard to do these kind of applications in traditional GUI frameworks?
You're perhaps more snarky than necessary, but I think you're getting to the core of the problem.
The web has unfortunately made JS a very common first language, and created an army of people who know JS. Then rather than learn, say, C++ and Qt for building cross-plattform GUI, they stick to the language they know even though it leads to inferior results.