Sure, but the concept of having one machine replicating to a second one was already possible so it should be possible also on HexOS, only maybe not with the ase of the buddy backup system they are offering.
I'm betting someone will make it work and teach us how to do it.
Anyway, as @casedistorted says, we can always bite the bullet on a 200 dollar license in the future and, if HexOS is 90% of what I expect it to be I'll be glad to give them money again.