Well not ALL. Some look like Montreal and the the base of the Vought Enterprises building, in "The Boys", looks shockingly like a certain concert venue in TorontoWell, in the Arrowverse (RIP Salmon Ladder), it is defined as being someone incredibly attractive, who also happens to inhabit a world of diverse and attractive people with diverse genders and sexualities.
There are worse things. Did I mention the whole ... attractive part? I mean, in all the multiverse, with all the Earths, it's funny how all them have drop-dead gorgeous people everywhere and every location on every earth strangely resembles Vancouver.
But yes, entire comic worlds seem like the entire populace has easy access to Brazilian plastic surgery professionals.