I trust Canonical far more than I trust Google, Apple, Brave, etc. I am not interested in a web app even if the server side is on my own machine. Web browsers are a party of vulnerabilities and the only thing that redeems the platform is fully independent engines running it like Electron, at minimum.
I also hate my mobile phone, I would not have it if it wasn't required to use my Revolut banking app so I can spend my sats where they aren't directly accepted.
A GTK or at least KDE based one would be even nicer, but Electron has dominated desktop app dev for a long time, and for a good reason - it works on all platforms, and it's even easy to deploy apps built for it on mobile devices.
I'll jump on the Nostr train when it integrates with my primary computing environment, my Pop OS desktop machine, where I do my dev work.
Hurry up and get the Electron client with full protocol support done already!