Just anecdotally - I have been both water bath and pressure canning on glass-topped stoves for years. 15 at least. I was several years into it before I learned you weren’t “supposed” to, but I researched it and found enough information out in the world reporting that it was perfectly ok, so I felt comfortable with it. I don’t slam my pots around, my water bath canner is the heaviest, since it gets filled with liquid, but I’ve never had an issue. I believe the glass tops are stronger today than originally. I want a canning set up outside eventually as well- use my brewing burner and propane or a camp stove- but that’s mostly because I live in a very small house in the southern US, and it gets hot and steamy inside.