The article misses an important bit of context (imo) that low thermal expansion glasses like CERAN have been around for ages and anyone who’s used an induction or a glass top stove would be familiar. However you can now get completely hidden stoves that look like stone countertops. If you’re not in the market for a kitchen, or know anyone people who recently remodeled it’s reasonable to not know they exist. I don’t know anyone with one, and everyone in our town still has gas. The author doesn’t explain which one they were buying, but it seems like the latter?
Normal induction glass top stoves are a unit that drops into the countertop so of course you get the glass included (because at the very least, it has the decal for the cook zones and controller built in). The invisible ones only come with the burners so you can custom fit the top. Looks like you can get them off AliExpress even. It seems like this is the point of confusion - the author thought he could go down to a glazing shop to buy some tough glass..?
I suggest go and watch Huygens Optics series about CERAN: