GPL isn’t the only open source license. This comment is beyond bizarre because it seems to imply that all open source software is GPL? And of course when software is licensed as GPL, that license can be enforced when someone breaks it (like your example). The original comment never mentioned GPL, it was about when something was licensed ss free. So when you give an example where it wasn’t licensed as such, what was the point?
It doesn’t feel like a premium material and it accumulates scratches and imperfections faster. Glass is either fine… or completely broken. Not a good heat conductor either.