It doesn't matter what they agree with, I know two women who have been raped by licensed taxi drivers, taxi licenses don't prevent crime, stop repeating that idiocy.
Nothing is perfect. It is a good thing to prevent people who have demonstrated the propensity to harm other to be in charge of vulnerable people. If you are in the back of a moving taxi you are vulnerable.
No, no it isn't. Put a date and a number of miles on the sticker.
How will you see the mileage on the vehicle from outside the vehicle? Anyone standing outside a vehicle can see the date the vehicle was inspected and figure out if it is out of date. Checking mileage requirs seeing the odometer. That is much more difficult from outside the car.
The amazingly shitty experiences I've had in amazingly shitty taxis disagree
Again, nothing is perfect.