I'm sure they'll do just fine as the deciphering of the ad goes viral.
Is this a joke? Or did they really show that advert?
It's a joke.
I'm not American, so wouldn't have seen the advert, but a simple Google search for 'Superbowl potato ad' yields a lot of big sites talking about it.
My opinion, for what it's worth: This is a clever viral marketing stunt.
Its CAH, They recently raised just over $100,000 during Black Friday to dig a hole and live stream it wouldn't be surprised if they did show the advert. (even if it was just a local level pre-game "cheap adspot" thing.)
Apparently [0] it actually aired in the Chicago area, but the spend was "five figures".