Oh, I don't mind, personally, and I agree with you. I also think security on these apps is done by the dissuasive power of knowing that you are live-tracked and almost certain to be caught, rather than any pre filtering (which is the taxi industry's MO); this is a feature.
This is what Uber checks for in California: https://newsroom.uber.com/details-on-safety/
Basically any lifetime sex offense, or terrorist register; and anything violent, or DUIs in the last 7 years.
Both of my drivers would not have passed the last 7 years bit (from what I deduced from our conversation) so the standards are clearly different abroad.
I agree if they fiddle with some numbers on a spreadsheet and payed less in taxes or smuggled drugs or something. If they beat somebody up or raped somebody I don't ever want to be near them, much less trust my life to them. I don't give a hoot if they can't get a job or be integrated in society. As far as I am concerned they are permanently broken people - probably like their victims.
An ex-con has paid his or her "debt to society" by being in prison. If we don't let them get a job and earn a living, how will they get rehabilitated in society?
Edit: typo/car/cab.