In a way it’s more fair by design. In a completely fair game the most skilled player will always win. In a game like Mario Kart everyone has a chance to win.
As a kid my family wouldn’t play most games with me because I won every time. If we couldn’t do co-op mode we didnt play, and they’d still get grumbly on co-op because I’d be doing the heavy lifting and showing them up. They’d play Mario Kart and Mario Party with me though.
As an e-sport or “compare your online rank to mine and weep” dick-measurer it sucks. As a video game its very good.
I guess for the fast food orders there could be some insights with enough volume and associated data (time, frequency, location.)
If someone suddenly started ordering loads or boycotted that one that decided homophobia was the way to go or something you could sense political leaning.
You could get a sense of allergies or vegetarianism.
You may figure out payday
Could maybe get a feel for menstrual cycles
Could figure out someone’s route home
Family size maybe.
Probably more idk.