This is not necessarily the case. CIC looks at the application, evidence provided, CBSA records, etc in deciding whether someone has met the 1095 days. If there are concerns over residency, etc they may issue a RQ. Keep in mind, a RQ could also be issued for quality assurance purposes. In my case, I travelled twice(1 month each time) and did not get RQ. In fact, my application took 5 months from start to finish.
There is someone on this forum who never left Canada since he became PR yet he got RQ. So what's most important is to submit as much proof as possible of your physical presence, but keep in mind, CIC could still issue a RQ. There is no reason to make yourself a "prisoner", especially if you end up still getting a RQ.