The Harper government didn't muzzle scientists because it had an inate hatred of scientists; it muzzled scientists because it was afraid of what they would say and the potential for lost votes. Canada's new government doesn't have that fear, so they have no reason to muzzle government scientists -- but that doesn't say anything about their principles. A commitment to openness is only tested when there is something you want to avoid having said.
(Incidentally, I think the "muzzled scientists" issue is somewhat overblown. Nobody complains about legal-advice privilege creating "muzzled lawyers", and exactly the same rationale applies to government scientists: If governments avoid consulting scientists because they're worried about the contents of their consultations becoming public, we're all worse off for it. This isn't to say that I think government scientists should be completely muzzled, mind you; but I think there's a reasonable middle ground between "completely open" and "completely muzzled" which nonetheless allows for governments to seek confidential advice from the scientists they employ.)