“Do you really think parents are supporting because of the schar or because if they dont support their precious child may not find the perfect shiduch”
That is a fabulous catch 22 – the parents have to support the boy learning because otherwise their daughter won’t get a good shidduch (the boy that’s learning). So if they really aren’t doing it for the schar then let them just not support the learning boy and then their daughter won’t get the wonderful shidduch with the learning boy that they don’t want anyway. So according to your wonderfully circular logic, how does the problem ever start?