It does but in exchange devs can make cross-platform applications. I don't mind using Electron apps unless they're horribly optimized like Teams used to be some years ago.
It is, which is why I avoid it. The amount of power VSCode consumes vs others is significant. Jetbrains products even have a low power mode which turns off indexing. Can run that thing all day long without plugging in.
I also use Ripcord for slack instead of that electron client.
I always avoid electron apps so I don't have to have a separate flow when I am on battery vs plugged in.