I think it's a two part phenomenon of typical memory. Something old is never as valued as something new, everyone feels like they've seen what Naughton can do and as such he's devalued compared to shiny new toys that offer a different experience and hope. And negative experiences stick in the memory longer than positive ones.
I think Dembele is a good opposite case to use with Naughton. Both can go through many matches making no impression on you, either way. Dembele occasionally does something good, Naughton occasionally does something bad. The line of people wanting to ship Naughton out is considerably longer, despite him being younger and offering more future potential than Dembele. People even defend Dembele him by saying the manager can get him doing this or doing that and he'll be class, even though its rare that players at 27/28 really develop their game in new ways.