I have read some articles that drivers don't mind the puke on their backseat, because they are compensated by Uber and the charges are often not disputed by the riders. I have seen drivers mention that it can be financially lucrative handling throw-ups.
I mean, there are even scams around it. When a rider blows chunks, are you like, "YESSSS!!"?
So which is it? Do you like it or not? Does it really work out economically? Would you rather clean up vomit if it means it makes you money?