People don't seem to be asking for age verification. They (we) want social media ban. There's no question about age verification in the survey, let alone intrusive software. When asked who ahould be responsible:
More than seven-in-ten (72%) Canadians agree that parents should be primarily responsible for regulating teens’ social media use, not governments.
This could be easily handled by placing the respinsibility on parents, like it is for many other things.
I've said this before and I'll say it again - it's much easier to answer my child's question as to why she's not allowed on social media with "it's illegal" when most of her peers hear the same at home, than some version of "it's bad for you" while most of her peers are allowed to use it.