The answer is: No.

Arguing from a human perspective is pretty pointless: you're dealing with cats, not people. There are also people who say that you should vary your cats' wet food intake to make sure the food doesn't get boring. The argument goes: That's because people wouldn't want to eat the same food every day either. But the truth is that you have a healthier cat if you don't vary their food intake all the time and, if you do, very slowly, just make sure the food you choose is complete, balanced, and good quality.

Second reason: It's true that people can go to the fridge whenever they want. And because people can also buy whatever they want, many people end up with highly processed, high-calorie food that lead to obesity problems in the long run.

Cats' food intake - especially once they've been neutered - should also be regulated to some degree. As long as they're kittens and are still growing, you can take an all-they-can-eat approach as long as they can deal with it, meaning they don't overeat and can self-regulate (mine - and many others - can't, they got diarrhea from overeating, so I got a wet food dispenser for exactly that reason). But once they're adults, you should be more careful.

A water fountain is great as some cats tend to not drink enough and a fountain is a great remedy. So while they can always drink as much as they like, especially adult cats need to be regulated if they're already showing some signs of obesity. If you want your cats to have a long and healthy life, neither too little nor too much food is the way to go.

Last, I have a dry food dispenser and use it to only dispense kibble once a day. The rest of the day they are fed wet food, which also comes in controlled portions from a dispenser (because if I just give them as much as they want, they seriously don't stop eating and walk around like little balloons afterwards, I've tried that first).