Facebook's initial offering was horrible because it was a horribly developed app, it wasn't the fault of the underlying technology whatever they claim. Lots of people have built similar apps on web views that don't suck.

PWAs, for example, can have downloadable bundle sizes < 5 MB, run in < 50MB ram, and have plenty of headroom for lots of features. You only need electron with it's own copy of a browser if the browser sandbox is unacceptable for your use case.