People were being a-holes. Insomniac was being totally quiet about the Raimi suit, because obviously they wanted it to be a surprise. But some people took it as their requests being ignored. So they threw temper tantrums.
I guess you could argue that Insomniac's silence on the matter could be seen as irritating. After all there was a similar major fan request for a movie suit in the Arkham games back in 2015, when everyone wanted Nolan's TDK Batman suit in Arkham Knight. Rocksteady just came out and said we've heard your requests and we're going to give it to you;
But the amount of anger, outrage, and drama that this Raimi suit issue caused was flat out ridiculous, and brought out the inner a-hole in a lot of people. It wasn't even like Insomniac told them they were never getting it.