I'm the author of the blog. Thanks for the posts and interest shown.

This proposal is a generalization of the core Paxos algorithm. It's therefore orthogonal to all customizations and adaptations. I believe that they can all benefit from it, including RAFT.

If you read the thread on raft-dev, you'll see that Heidi Howard has independently come up with the same idea, and is working on a proof for it.