Well, You have gotten me beat on the years in a Thai village, only 15 here. We must not live in the same village. I don't know any working bar girls so I can't speak for them. All the working girls I know from here send money back even though they may be only making 10-15000 in the city. As for the farang backrolling the parent's house-- That is still the daughter caring for her parents.
I do agree with you that the custom is fading, western me, me, me, got to have, got to have mentality setting in.