I absolutely believe building electron apps is the future -- why would you struggle with the M*N effort of building different UIs when you can get comfortable with a paradigm that you already know that works relatively predictably across OSes and is constantly being improved (HTML+CSS).
Unfortunately, one of the big problems left to get tackled (I think?) is the lack of native system accessiblity features that are more advanced than what the web can/does offer.
So excited to see this idea getting attention -- I really want to work on a cross-platform app with neon + rust in the future, and see if we can finally get past the gripe of memory usage for electron apps so that people can stop bashing them.