What is this based on? I think it’s more accurate to say that developers and enthusiasts are the ones who articulate this sentiment. Regular users do not talk about it or understand the issue, but behave and retain usage differently depending on the intuitively of the interface.

I think you got it backwards.

If users rejected electron apps they would not exist. Platform native is not even a concept 99% of users are familiar with.

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.