I read their point as being: the first time you try pizza you're like "this is delicious and amazing." The first time you try Caesar salad it lights you up in the same magical way.
I could be wrong of course - but that definitely fits my own experience. The first time I had a chicken CS as a kid in a restaurant, it was all I wanted to eat every time we went out for months afterwards. I genuinely couldn't believe 'salad' could be so delicious.
Since you’ve travelled enough to have a greater understanding, could you share with us your knowledge of a culture that makes flatbread but doesn’t put stuff on top of it? Where is that culture? What is their flatbread called?
Imeretian (Imeruli) khachapuri
Because it's in it, heh!
And BTW adjarian khachapuri is technically a pizza too.
https://en.wikipedia.org/wiki/Khachapuri#Types
https://en.wikipedia.org/wiki/File:%D0%92%D0%BA%D1%83%D1%81%...
After she clarified that I could be /any/ dressing, I asked what made it a "Caesar salad". She cheerfully replied, "The Romain lettuce."