Saying gain points for PR may well result in a study permit being refused.
You need to focus on why studying a masters in Canada will improve your prospects on returning to your home country. The masters needs to be relevant to your existing qualifications and work experience.
The reality is people study in Canada, then apply for a PGWP to get Canadian work experience and then apply for PR, however to state this as prime objective upfront as opposed to a plan for returning to home country generally results in a study permit being rejected.
So in this case consultants are correct