Instructors in the Daechi-dong academy district these days are all young and good-looking

Lately, I've been working with various instructors while moving around the Daechi-dong academy district.
Everyone puts their own photo on things like their textbook covers,
and when I see their KakaoTalk profile pictures and such, they all look so young and handsome or beautiful.
I thought they must have used a lot of filters, but when I see them in person, they look almost exactly like their photos.
I don't see any instructors who look old...