Bitcoin Cash is now insurance against not raising block size to 2MB in November as Segwit2x prescribes to do.
Those who want seggy weggy and 1mb blocksize, can now have it using the alt Bitcoin Core. The compromise of 2mb is pointless.
There are those who don't trust seggy weggy and won't transact using seggy weggy.
Thus, those who want 8mb blocksize with no seggy weggy, can use the alt Bitcoin cash.
An insurance is most pointless and could lead to another hardfork therefore another alt... Bitcoin 2SW (2mb segregated witness) or whatever....