I'm not saying we own thin-crust Chicago pizza, just that deep dish was not a thing on the south side when he lived there (it wasn't in the 80s and 90s when I grew up there either).
I ate Edwardo’s several times a month on the south side in the 80’s and 90’s, as did a sizable number of my friends. This is back before it became a chain (I guess technically the south side location was the second location, so it was already a chain) and they decided to take the best pizza on earth and make it mediocre-to-poor for a mass audience, which I guess happened in the early aughts?
So there is at least an existence proof for deep dish very much a thing for south side kids when he was in the vicinity.
Ha! Good to know. Friday is our pizza day, and we usually go with one local to us (Capri's), but on occasion do Aurelio's. I think today we'll have to do Aurelio's.