I think that, in his letter, Minister Clement also suggests that you study this. Parliament has some control based on votes. If you change the control method based on programs, a completely different control mechanism will be created. I don't think that one is better or worse than the other. It's simply a matter of deciding which control mechanism should be used.
Evidence of meeting #34 for Government Operations and Estimates in the 41st Parliament, 1st Session. (The original version is on Parliament’s site, as are the minutes.) The winning word was main.
A recording is available from Parliament.