It is an altcoin. It forked without consensus. So it does not belong under "Bitcoin" discussion unless if that talks about Bitcoin and not XT solely. The forum is not deleting XT topics but moving it to Altcoin board.
Code that creates a hard fork is by definition an altcoin? By that definition, the current Bitcoin itself is an altcoin, and Bitcoin Core discussion doesn't belong here either. None of us are using the Bitcoin system that existed two years ago - Bitcoin has hard-forked more than once, most recently with BIP 34. Should we move all Bitcoin discussion to an altcoin board?