Wasting time between rides. Playing with both phones and not able to get a new request.
You can still get/accept pings, but yes, you do have to complete the rating to get the pickup info.
I don't do this every ride. Maybe a few times a day.
If its an airport ride where I helped with lots of luggage, or allowed luggage in the cabin where they should have ordered an xl, I give them the opportunity to do the right thing and tip. I think its more fair than just dinging them because they gave no cash tip.
I do the same, when I drive a local in service industry home in the burbs. I'll sit on rating screen until next ping. I give them a chance. It leads to a more accurate and fair rating for these riders.
Giving a 5*, only to find out they didn't tip in the app, doesn't paint an accurate picture. Same with giving less than 5*, only to find out they did tip in the app right after dropping them.
Since Uber took away the ability to change rating, this is the best I can do to fairly rate. (Its not perfect though)