Raft consensus with pairs? I smell bulls*t there. Even when they say it's 8, it boils down to pair-wise checks, without any consensus. Just the consensus of wrong.

Also https://en.wikipedia.org/wiki/TTEthernet looks like bolting time-guaranteed switching networks onto randomizing ethernet hardware. Sounds incredibly cheap and stupid. Either stay with guaranteed real-time switching, or give up on hard real-time guarantees and favor performance, simplicity and cheap stock hardware.

Monkeys in space.