It's pretty simple really. If you want to remove stakeholder votes from rewards, then remove stakeholders as the ones paying the rewards from inflation. Create a new system with rewards paid for and controlled by a subcommunity with different allocation rules, or rewards coming from ad revenue and allocated in some other way, or something else.

I don't think it is necessary for DPoS to involve rewards at all. The social posting and rewarding system just happens to be an app that was built on the chain, but it's not the only way, and not part of DPoS itself.