Yes, the problem with all these automated cat poop solutions is losing access to a super important clue about your cat's health. If you scoop every day, you'll notice when suddenly there is more or less pee in the box, or blood in your cat's urine or stool. Cats hide pain. Sometimes the litter box is the only way to catch something like a bladder obstruction before it's too late.

Being able to smell their waste in the litter box is also an important part of a cat's territory marking. Having it all flushed away or covered up in scented cleaning solution is going to raise the chances a cat starts peeing in inappropriate places under stress. Same with the lack of 'sand' to dig in when peeing in a toilet (at least the automated boxes still have a digging substrate). The digging is so instinctual that you don't have to train even feral cats to use a litterbox. As soon as they realize it's the only place in the house they can dig, they'll use it.