Don't rely on AI. There's nothing random about selecting the best looking pizzas.
Devil's advocate: it could even be the local board users have a local tradition of putting for instance pineapple on a pizza, and selected only the pizzas with pineapple. If there were only 5, that explains the selected pizzas. If they're all in the order they were posted, that explains the same order. I'm not saying this is what happened, and it's quite likely they were indeed just cheating, but it doesn't hurt to at least consider other options.
in fact, you devil's advocate are not wrong
I can't blame you at all
it all depends on local habits, sometimes I have to honestly say that they are mental limitations, I have tasted different things from my culture and I liked them a lot too
not to mention the gourmet meals served by special chefs (I was invited since I can't afford these places)
that combine different and exotic tastes
from a food point of view I opened my mind to discover new things