Not even that - but only the *latest* versions of those browsers! (Technically, I'm using "Chrome", but a 3 year old version).
Maybe this will be a wakeup call to the WWW: stop using useless JS libraries you don't need and write all your damn code yourself. If you can't understand it, and you don't know what it does, and you don't know why you need, then don't use it!!!
This has never failed to serve me well as a webmaster. And of course, none of my websites randomly break.
jquery is pretty much the only JS library I ever use, and even then, only on pages that actually "need" JS. Everything else on top of that, I write if I need it. And if I don't need JS, I don't use it.
It's not "simplistic", it's called "resilient progressive web development".