I guess so but someone that is ignorant of our law may well be ignorant of it in their own country.
My main point was the affording of a taxi. I don;t think it has anything to do with it. If people are ignorant/dicks then their bank balance doesn't matter
Some people don't care, some people don't realise they are over the limit as don't understand legal limits properly. I would assume that after one pint I would be OK to drive but I don't know for sure so tend to not drink at all
Being able to afford a taxi doesn't come in to it