Franc Roddam, who directed the classic movie Quadrophenia before creating the cooking show format in 1990, told Digital Spy that he is still "peripherally involved" with the show since its 2001 revamp.
"MasterChef was the first reality show," Roddam said. "You know how many years ago it was? 25 years.
"We made a rule. We would never criticise the people, we would only criticise the food. There's no brutality in it. I'm very proud of it, and it's all over the world. It's done well."
Asked if other modern reality shows are instead based too much around criticising the participants, he added: "They are. For me they are. They're all about humiliation. Humiliation and degradation.
"I can't stand them, I really can't. It's gladiatorial, whereas what we're saying [with MasterChef] is that it's really about skill and talent and desire and 'We'll hope you do it'."
Roddam also described the Australian version of MasterChef as "the best thing in the world".
Watch our interview with MasterChef hosts John Torode and Gregg Wallace from earlier this year below: