Honestly, I like whole wheat pizza with vegetables. When I was in Italy, not all pizzas came with cheese and rarely with meat, certainly nothing like our pepperoni pizzas here in the US. I never cared for pepperoni pizza when I did eat meat. The pizza in Italy was delicious. As long as you have fresh vegetables and a nice, chewy crust, you are golden. I am guessing they were going to Papa Johns though which I didn't care for their pizza. There is a chain that makes awesome vegan pizzas called Mellow Mushroom. I love their pizza so much Anyway, I think it is part of perspective.
I also disagree with the no oil movement within veganism. I mean people do it but oil is delicious. I made a yummy smoky rice/kale/bean dish this morning and added olive oil and herbamere (herbs/salt) made it outstanding with some Frank's hot sauce on top