I don't think this is true. It's just much easier to bring in people when you have access to them to ask directly, basically.
In my short experience in public service, I met a great number of people who were not in lockstep with the so-called "values they try to force" (i.e. the political plans of the current government), so it seems they're not doing a great job of "forcing" those values if that's the plan.
They have enough problems keeping the people they currently have in the military on the same page.
https://www.cbc.ca/news/politics/rcmp-caf-charges-terrorism-...
The general response to this was amazement that the MP or RCMP actually did anything about it, given what occurs within those.
It is in the process of spending vast amounts of money to remove guns from legal gun owners that are subject to absolutely amazing amounts of oversight already.