Honestly, Izuku was more surprised being brought into a world with magic, so the notion of worlds not having them is just...normal, to him. Where he's from, magic doesn't exist to begin with.

"That's right. And I'm sure there are a lot more with magic, and even more after that with a hybrid of sorts," he continues, folding his arms across his middle. "I would consider this one more of a hybrid...mainly since we don't know what it's even supposed to have normally, if anything."