Confused about all the hype surrounding Capitano

I mean no offense, but I'm puzzled by the hype around him. I'm aware that he's the strongest human in Teyvat but.. is there another reason why people love him so much?

To make things clear, I'm not a supporter of the Fatui—but I also don't defend the Traveler. I don't like the Traveler because of how arrogant they are, and I'm happy they got humbled by Arlecchino in her SQ. Anyway, I do hope you forgive this outsider for asking this question.