I am reading this topic and think: there is a demand but no good offers.
I think the content manager will be also miner or bounty hunter. But in this case will he be able to write about it. It takes enough time. So, it really difficult to find a person who know this sphere very well and can write about all the process, analytical materials.
I think this is good offer. What do you want, we pay more than 30% for writting articles ? we we not get anything?
Content manager is not person here, if his content is not good then he will not get paid (if ICO bounty).