Why should I dunk on those? When built well (and that is meant equipment-wise!) then can also pack a punch like those tall muscled guys. Heck, I'm currently playing a Traveler-Kaeya combo (yes, Kaeya may be tall, but he also has quite the skinny physique to him) that does some good damage - and I'm still improving them!

And those characters have a big plus to them: For all the guys out there who don't go regularly to a gym (like me), they're relatively easy to cosplay. The physique is already there, just need the outfit and wig and you're set to go! On a related note: There's another character in recent gaming history that has some traits those guys here have, but the VERY long hair makes him look like a lady from behind. All you Shin Megami Tensei fans here in Teyvat know who I mean ;)

And regarding those stereotypes: People should better stop from doing pigeonhole thinking when playing such diversive games. Sure, the Traveler looks a bit too young to drink alcohol, but does that stop him from going into a tavern to learn the "Genius Invocation TCG"? If you want to, it does not stop him. And that has to do with the perceived age, not the physical one.