I can't drive for either because the newest car I own is a 96, but I use them frequently for rides.
Around here, overwhelmingly, it seems like there are a large proportion of people who have decided to make it their career... not that they actively chose that, but because they kind of painted themselves into a corner. Young adult working a low-paying job, they're financing a 2010 Subaru and upside down on the loan. They start driving and to stay competitive they buy little things to make their car "special." A DVD player on the headrest, bottles of water for guests, scent pods for the air vents, SiriusXM, etc. Then suddenly the year changes and your car is no longer valid for their rolling 10-year rule and instead of losing their driving job they go take their upside-down loan Suby and buy something at least as flashy if not more flashy so they can keep driving.
One guy that I has picked me up several times always complains about bills and finances. He had a nice 2008 Nissan Maxima. When Uber required him to either get a newer car or stop driving, he went and bought a 2019 Cadillac somethingorother. Nice car, and I'm sure he gets good ratings, but he's so far upside down that he works his 40-hour job and then drives from 5pm until 3am to make money from the bar crowd.
There is an appeal process if your car falls out of the 10-year rolling rule, but he said it is useless. You basically fill out an online form that asks for the mileage and some pictures of the car, but his comment was something like "they ask you for all of that so they can deny it."
The overwhelming feeling I get is this: If you have a car that fits the criteria and want to drive, do it, but the prospect of income compared to the reality seem to be far from comparable. Some people like me don't care what the car is like. Others treat it like AirBnB where they won't ride with anyone over a certain rating, which makes it competitive.
In all the times I have used Uber, my go-to question to strike up a conversation is "do you like driving for Uber?" The overwhelming answer is usually "it pays the car loan," or "I have to do this to support my son."
It just feels to me that most drivers start driving because they have to buy a car and can't afford it and end up being forced to keep doing it so they can pay the loan. Seems counterintuitive to me to buy a car so that you can use it to work to pay for the car.