Bitcoin has already been forked. That's where Litecoin, etc. came from. When you fork Bitcoin's existing economic majority, that by definition creates an
alternative economic consensus (regardless of UXTO inheritance and blockchain).
I'm not sure why discussion of this particular new alt isn't in its proper forum here:
https://bitcointalk.org/index.php?topic=1115016.0Yep, just an alt, like the 500+ other alts. If anything, inheriting the BTC blockchain and its unspent balances dooms an alt. After all, there are loads of people with coins who have the ability to dump (due to their BTC balances porting over) and incentive to dump (because it's a competing chain, but mostly just for immediate profit).