Furthermore if I were driving with a friend someplace and they got a call, I’d think nothing of them answering it and having a conversation.
This is a fair view. It’s also fair to treat a driver as a new acquaintance. And it makes sense that the drivers who have a choice (i.e. are higher rated) will choose riders who treat them like that.
My point isn’t everyone has to do these things. Just that if you care about your rating, asking for feedback and offering common courtesies cab go a long way. (I’ve also found it improves my disposition, but that’s a separate matter.)
On the rare occasions I use Uber or Lyft today, I’m polite and friendly/chatty enough depending on the circumstances but someone’s doing a job for me and I don’t owe them anything beyond basic politeness.
It monopolizes the noise in the area and puts everyone else in some sort of awkward space where they have to eavesdrop and pretend they aren't. Sometimes I think about obviously watching a train commuter have a long and loud phone conversation, but I don't because it would be rude and aggressive.
I guess hired cars are a little different in most respects but people can still feel bad or awkward for listening in on something they aren't part of. Especially if the conversation is loud, personal, or confidential.
It's much better if the phone call is urgent, short, or important. But even then it's polite to be conciliatory as the phone call is made or picked up.
It wouldn’t have to me, either. But I was curious and so asked, and in between the useless answers I got that repeating point of feedback.
Note that I didn’t stop taking calls. But I did think “how would I behave if I were in a friend’s car?” I figured I’d at least give a heads up that a call was coming in. So I tried that one thing and it worked.