I belief is product simply has come to mean the most visible layer of the thing. For hardware "visible" layer is a literal device but more important product is what the device can do, a port is useless if there are no driver codes for it. For websites product can just mean the site/app does the thing, regardless of if it does it well, consistently, or could be done better. This is why words like "taste is what matters" and "code was never the goal" are said so often, I argue code is in the point but more people just care it works without going much deeper.