There's NOTHING wrong with the Donner films other than people and fanboys couldn't get it (a few critics did get it, and some moviegoers like myself did) and wanted action all of the time.
The critics were kind to the Donner films as I remember. I loved them myself, as did most of my friends. But then again we weren't a group of internet fanboys (internet? what's the internet?) but I remember my parents and older siblings' friends loving the Donner films as did most of their contemporaries. Of course I was a teenaged girl who didn't hang with "fanboys." Maybe the fanboys were there not appreciating Donner's more sentimental vision of Superman.
As an adult rewatching them, (and not a teenaged girl overwhelmed by Chris Reeve's obvious charms) I can appreciate in retrospect how good they were and how much more I appreciate heartfelt characters than overwhelming frenetic CGI battles.