Most of the times when I interact with the address bar it's either to go to a different site, google something or copy the url - in all of those use cases I interact with the entire address to either replace it or select it.

I would wager almost anything that this is the case for the vast majority of regular users because most of the ones I've interviewed (N = 31) for a uni UX study didn't even know how to read URLs for the most part - especially not after the ? query part.