It's common for poorly adjusted people to develop a sense of superiority as a defence mechanism.
Like how EU4 players feel toward Civ players
Building a system in which you have value and others are stupid can help you cope.
Damn
Perhaps these people are responding to other peoples sense of superiority. These other people don’t get called out because they are “normal” and we assume that normalcy is automatically superior.
It sadly implies that this person went through bullying and rejection.
It has nothing to do with rejection. This claim that "you poor thing, if you hadn't been rejected you'd see how good this is" sounds really condescending.
Now the age-old question is whether, with enough "opening up", they could. And yes, in many cases with enough therapy they could and would. But in other cases, therapy isn't going to achieve that. But regardless, doing therapy is essentially changing yourself to become a different person. And nobody is under the obligation to do therapy, or to grow or change or open up.
So I think it's important to be able to accept at face value that when someone isn't into something, whether it's dance or sex or the outdoors, they just aren't into it. Leave the door open so they know they're invited on your next hike, but zero pressure.
Everybody gets to make their own choices on what they will and won't enjoy in life, for sure. I'm not the type of person to apply pressure over something like that. But as someone who learned that physical intelligence is something you can grow in my 30s, I do feel it's a bit of a sacred duty to chip away at the same fixed mindset when I see it in other people.