The curation trail is like help for you to earn easier... You set it up and you earn money by automatically upvoting other's content...
So, in a nutshell, I check posts, pick the best ones, and you automatically follow my upvote, and earn money... In this case, I'm doing manual work for others, and you earning money being a part of a trail...
Creators are happy as they are earning more, and they are feeling appreciated that their work is recognized... Curators earning more as they are using their voting power even if they are not online...
So it's a win-win...
I didn't understand the second part of your comment...