I think users do care. I care that I can't close my browser without missing messages. I dislike that Electron apps use half my RAM.
If by "don't care" you mean "don't care enough to abandon a platform their friends are on" then I guess I agree. But all you've proven is that network effects matter.
If by "don't care" you mean "don't care enough to abandon a platform their friends are on" then I guess I agree. But all you've proven is that network effects matter.