They just wanted to bash K-pop and C group was used. They did not stan C-pop or whatever or, C-pop must have been more popular internationally.
Thing is, I noticed that anytime a kpop group is involved with a cpop group, especially these days, kpop fans and cpop fans bash the Korean groups comparing them like crazy even down to looks lmao Cpop also is not more popular than kpop internationally, not even close. If you only count ethnic Chinese listeners than maybe but when it comes to non Asians…. 
