What people don't understand is that it's not a "mentality", it's an economic imperative.
It makes sense, business wise, to "throw more hardware at it", and "lowering the barrier to entry" obviously also means that somebody can develop something with lower costs/faster time to market.
It's not a question of spoiled devs.
It's a question of savvy business people.
People not understanding this don't understand how economics works.
There is NO "mandatory" electron apps... But there is some great software made with electron that has become very popular.
I am confident if something has been made with electron, there is native alternatives out there. Don't like slack? Then use IRC.
Don't like my joystick to keyboard/mouse remapper with an electron frontend? Then don't, use one of the many alternatives (Too bad if they don't provide what you are looking for and no one of them seems to be able to modulate output in order to emulate analog controls. But at least it was written by a pro!)
I do not use Slack. I use self-hosted Mattermost as a replacement of Slack, I use IRC, and I use Element (formerly known as Riot.im).
That only works if you can control what others use (maybe not in the case of Slack, but that's the exception as messengers go).