I've gotten way "better" at social events and parties over the years. It hasn't changed my dislike for them; I still find them exhausting and unpleasant.
I think it's important to remember that one's level of skill and appreciation of something aren't always directly related. I have found some things to be more enjoyable as I've improved (art, music, fighting games), but other things, like big social gatherings, remain unenjoyable for me.
You're missing the point he just stated, the goal he described is appreciation. Creating your own appreciation in a specific context is the aforementioned skill, and finding it to be exhausting and unpleasant is reflective of not having that skill.
I think it's important to remember that one's level of skill and appreciation of something aren't always directly related. I have found some things to be more enjoyable as I've improved (art, music, fighting games), but other things, like big social gatherings, remain unenjoyable for me.