It's not relevant or useful, though. You're telling us a story about how you use those phones, the implication being that it's unlikely that those numbers have made it onto spam lists because of your usage patterns.

But carriers recycle numbers, often pretty quickly after someone ends their service. The number on the Canadian phone of yours may have previously belonged to someone who plastered the number all over the internet, and used it to sign up for a bunch of things run by people who had no qualms over selling their customer data to spammers.

So no, these stories are not particularly relevant or useful, because they can never take into account the full history.