You should check out this post on an alternate view on flagging:
https://steemit.com/voting/@sigmajin/the-dwin-fallacy-in-defense-of-the-flag-part-ii

When you say they have provided no value, what are you basing that off of? Just the fact that they don't post blog content? Could they have provided value in other ways, such as developing code for the blockchain, running mining/witness servers, investing money into the platform?