Here’s the thing: if someone doesn’t want to chat should that affect their access to a paid service?
With Uber you’re paying for a professional driver (they’re being paid, so they’re a pro by definition) to take you from A to B. There shouldn’t be any obligation to engage in anything but pleasantries.
I think I'm social enough, but who knows. I always respond with conversation when they're interested.
But this is their job, and I'm paying for the service with my money. It's not the passenger's responsibility or obligation to socialize with the driver. The passenger's responsibility is to be there on time, not mess up the car, and pay.
I’ve noticed that my friends who are not great at marketing themselves usually have a lower rating.