Roger Ver and the Bitcoin Cash community said that, nodes do not matter, and the miners decide. Well the miners have decided. Bitcoin SV will be the real Bitcoin Cash! Hahahaha.
What now? Will they say that non-mining nodes matter, and that users should decide? Or that Bitcoin SV is an attack?

No. ABC redirected 4Ehash from BTC mining to Bitcoin Cash ABC mining in order to show mining strength. Thereby demonstrating the fact that non-mining, fully-validating clients (often mistakenly called 'full nodes') are irrelevant against the non-sybillable mining power.