medisave: is cpf violating the law

there are two laws on medisave. one requires a self employed to continue to contribute to the medisave regardless of his age as long as he is self employed. does it mean that if a person is 100 years old and still self employed, he is still required to contribute to his medisave? obviously it is and no one in cpf cares two hoots why or is this an anomaly. the second law says the ceiling for contribution to the medisave currently stands at $32,500. this means there is no need to contribute to the medisave once this ceiling is reached. but the cpf practice is to transfer the medisave contribution into the ordinary account. or if this account is closed for members above 55 years, then the excess will be transferred to the retirement account. is this legally right to do so? all these laws seems to be conceived separately for different reasons in different times. should not the cpf straighten these laws to make them more sensible and relevant to the other cpf regulations like partial withdrawal at 55 and paying out at 62? should there be a law to stop cpf from demanding contributions from the self employed after a certain age? why is it so fun and shiok to keep collecting people's money? is cpf in violation of the laws that it introduces and implemented for its own convenience?