I understand, but thing is Qt with Qt Quick doesn't differ much to stuff you already do (JS can be used in Qt for extending stuff and QML is like JS by itself).
My problem is that you have tons of plugins and other stuff that probably Qt would provide on its own in native like performance, instead of JS scripts that have to be JITed on each start, also you don't have to load entire giant chromium (CEF) to launch everything, instead you have Qt that is using native OS calls + small JS engine.
I mean from my perspective, Qt is as well established if not even better there including tools, UX, community, and has bigger efficiency. Even biggest CEF/Electron stuff in size pales in comparison to Plasma/KDE that proves it runs amazingly. Of course i understand that Web developers are just cheaper, but considering team for client changed few times over already due to problems, costs of training long term seems to be huge from those choices.
I understand such choices for Discord/Slack etc. where you have web client and desktop client looking the same where they share 99% of code. But there is reason why many people spit on Atom, VS code and your client.