PSA: a recently-fixed image parsing vulnerability in Chrome (and things that use Chrome, such as Electron apps) is being actively exploited in the wild. install your updates!
Many/most electron apps don't receive timely security updates, so if you don't want arbitrary images to be able to get code execution you might want to stop using them.
Discord has also been using ancient electron versions for a long while now (I don't know if they've since updated to versions that haven't been EoL'ed).
On Linux, I literally have a better experience using discord in my browser than the electron version.
Edit: looks like discord updated to Electron 22 in March 2023, with the update to Electron 23 happening maybe at the end of the year or early next year, according to this reddit post. So they're getting better, but still a bit behind.
At this pace I predict the fabled "year of the Linux desktop" will arrive when local- processing desktops have been overrun by closed-off mobile devices and cloud services.
Still, nothing comes close to a native UI experience.
That's not really well defined on Linux. It feels like every application comes with its own toolkit and its own behavior. Even on Windows, there is a mixture of three different generations of Windows UI systems (Windows XP-style, Windows 8-style, Fluent) that are completely different.