If you don't like having to choose which version of react-router to choose, you probably should be using a preset like create-react-app which makes this kind of decision for you. Or you should use something other than React which includes everything and the kitchen sink.

Exactly! (snark aside)

This doesn't really make sense to me. You have to pick a version for literally every single library you use. And those different versions have different interfaces, which is why they have different versions...