I think Zoro fans want Zoro to be stronger than Luffy, not equal.
They were saying "Zoro > Luffy" when Zoro and Luffy had very similar performances on the rooftop prior to Luffy's CoC awakening.
Though, right now Luffy is one power-up ahead of Zoro. So I'd say he's stronger than him.
That IS not realy true, Zoro fans dont consider him stronger than Luffy to be honest, Zoro IS very close to Luffy in strenght and the second strongest in the crew.
An all out fight between them will be high/extreme diff with Luffy definitely losing something.
It is that simple, what Zoro fans want is just acceptance about Zoro's power level.
The fact Zoro was able to temporaly counter Hakkai (Kaido + BM attack combo) and tank it while being capable to still scare kaido afterward even though he was heavily weakenned should stop all doubt in everyone's mind.
And this is likely not even the end for Zoro, he will get even stronger by fighting King maybe master ad CoC and make a black blade.
Also Luffy fans should stop viewing ZKK as something bad, It wont change the fact Luffy≥Zoro expecialy when Luffy is already having a 1 vs 1 with Kaido.
ZKK does not mean Zoro fans want him stronger than Luffy, it IS just going to be a parallel with Ryuma the dragon Slayer.