Hello there actually quite confuse with you're statement. I think only few campaigns have reserved and for your info I think youre referring to translation campaign for the reserved. Since Im also joining article written campaign and there's no reservation for this. Only who write a legit content without copying and plagiarism are mostly accepted here. Youre definitely right, this is one part of campaign that really pay good. Especially, the budget for this is way bigger compared to social media campaigns. I think its only right to give some bigger budget on this. Cause there's a lot of effort to do it than sharing and posting on facebook or twitter.
I am quite sure Im referring to article bounty. In Medium you may search for some ICOs familiar to you that you know have ongoing bounty campaigns. You'd be surprised to see some that contain nothing when you open them. I think the link created by this empty article is being used in bounty to reserve their spot which they can later on edit to their liking with no pressure of missing the spot because they are already reserved.