@hope2022 a good question and one, about travel insurance for us, I've raised a few times without much success. If you did into the videos on Ovarian Cancer Canada you'll find a short presentation from someone in the insurance industry but it's at least 4 years old so probably well out of date.
That said, unless it's a qualified broker of travel insurance who told you this I'd take it with a grain of salt and call a professional. I'm thinking I'd go to Blue Cross first for the information but I think there are other providers out there too. I'd also ask them or call the provincial government to confirm entitlements under your provincial health insurance for out of province/out of country travel. And have you list of "what if's" to ask so you're clear under what circumstances you'd be covered and how much that coverage would be.
I know some of our gals have started travelling again so hopefully someone else will have better information for you, I"m sure you're get that sorted out so happy trails wherever you're headed.