If that were the case, why would he be wearing a Horizen signature block that doesn't have any bounty? 
Few posts behind I have invited all who wants to test Signatures without any rewards. There are few members so far, and I would rather call them supporters..
We don't have open campaigns. You can wear it if you like.
If someday I get rich enough I will wear this signature for free. Meanwhile I need all bounty payment incentives
Token prices have gone too low.