No, we're not "getting away" with anything. The reg that restricts pistol mags to 10 rnds applies in both cases. The S&W decision, however, is more questionable since the rifle was produced long before the pistol. The basis for deciding that the mag had been designed for both was a few words in a S&W catalogue. This is a flimsy and preposterous basis for making classification determinations.
But even accepting the 15-22 mag classification and the fundamentally absurd regulation, there is still plenty to complain about, including:
a) the failure to provide compensation for financial losses incurred because of the reclass;
b) the failure to notify owners immediately of the reclass (which unwittingly criminalized most owners);
c) the hostile and abusive tone of Nicole Boucher's letter to owners; and
d) the ridiculous and ineffective way she (the RCMP) is trying to address the issue (which, of course, they created in the first place.)
These are all points which should be made strenuously at the political level.
In my opinion, staying quiet is not a productive long term strategy. Fly under the radar long enough and they'll get you with ground fire. Every stupid and abusive act by government should be contested.