It would be interesting to see a comparison to feral or barn cats that catch their own meals, in an area with plenty of prey & are not supplemented with cat food, to see how often they eat.
I don't like the idea of feeding only once per day especially if the humans in the house are eating multiple times a day, the smell of food would start producing enzymes in the gut creating the feeling of hunger.
Since there is always another side to each theory, according to this article a cat's stomach is only about the size of a ping pong ball, therefore they should be eating several times a day
https://healthypets.mercola.com/site...-behavior.aspx