Wilder was speaking after his side beat Norwich City on Sunday, only a few days after he said the technology was ruining the sport.
"Players, managers, to get to the position they're in they've got to work hard, they've got to do a lot of things right and they've got to do their jobs right and so do referees and officials," said Wilder.
"We've got the elite referees in the world, the way they work, full time, the way they work away from the game in terms of the fitness and the conditioning and the attention to detail.
"The percentage that we're looking at improving for me is not balanced by what's happening on the other bits – that's the way I'm looking at it.
"That's the disappointing thing because I am a traditionalist, I love the game, I love the atmosphere at games.
"The percentages that we're looking at I don't think are making the game a better game to be involved in at the moment and I think we're doing a disservice to the elite referees as well. I think that's putting doubt in their mind as well."