Good luck rejecting something when it's mandated by your job, as is often the case with slack and other electron-crapware. Electron apps exist because it's not the users deciding what the things they use are built in, it's the people who build them. For the vast majority of electron apps there isn't a non-electron alternative that allows you to do the same on said platform, and that's not even starting to look at network effects.

This is absolutely true. Even if they notice, they won’t have the familiarity with the functional differences to even measure whether either is a good or bad thing.

Same thing could have been said for Java apps 15 years ago.