Save yourself some money and privacy, and just learn about the Bristol Stool Scale for free (which is all this thing is using).
This is just a camera connected to some LLM that tells you if your poop is a healthy shape or color. Unless this thing is sampling your stool, it's not going to tell you anything you can't figure out with your own eyes. It isn't going to be diagnosing your vitamin deficiencies or catch early signs of colon cancer.
Or you could just eat healthily and take a good look at your prize logs before you flush. One doesn't [need] a piece of tech to determine whether you should have eaten that week-old meal you left hiding in the back of the fridge.
Even the author agrees.
ETA: Also, if you have the money to spend on this, go buy a nice bidet. Better use of your money.
EDIT: My god, they kind of predicted NFTs with this one as well. A literal throw away line of being able to redeem usage points for a 'digital poster for my digital poster wallet.'