If the US pulled it off, then the political monsters of the world even in "well established" democracies will attempt to emulate it. Hell, they're taking about abortion rights up here in canada, it wasn't even a question till recently.
It's still not, really, IMO. Even the most conservative leaders of the Conservative Party we've ever had haven't been inclined to even allow in-party debate of the subject. Yes, there are Conservative MPs who'd try to re-open the issue if it were allowed (hell, I'd wager there are Liberal politicians who are personally against it considering how many Catholics are among their ranks), but the party leaders have kept them in check. Canadian Conservatives also aren't nearly so relentless or devoted enough to accomplish what the Republicans did. I'd compare what happened last week to The Doctor's chipping away at the diamond wall in 'Heaven Sent'... this is the result of 5 decades of relentlesss, concentrated effort by some of the most diabolical, single-minded and devoted politicians who've ever lived. Since the ruling first came down they haven't stopped in their attempts to attack and undermine it. The patience and planning they've exhibited are almost scary.
Canadian conservatives have neither the devotion to the issue, the inclination, nor the mechanisms at their disposal to pull off any of it. I may not like their stance on social issues, but I also trust that Canadian conservatives (at least as they exist today) don't engage in the same kind of tactics we see Republicans have perfected down south (gerrymandering, vote supression laws, etc.). Most Conservative MPs are still rational human beings (with the exception of some who originally came from the Reform/Alliance ranks), and as such they're well aware that there is very little appetite in Canada for social Conservatism. Do we want our governments to be more financially literate and competent than Prince Justin and his menagerie of assclowns? Absolutely. But we're not willing to vote in social Conservatives to get it.
They're only talking about it now because it seems like Canada desperately needs to imitate every crisis America goes through, even if makes no sense. Kind of ironic, considering how so many Canadians define their whole national identity in terms of how
not American they are (or how much they can be seen to look down on America), meanwhile they're unnecessarily aping every social crisis and the full blown culture war happening south of the border.