He may have been, but they have several products and what he was showing is the detergent booster, I believe (linked below), and not the machine cleaner which is used periodically (which is just a stronger form of it that you run without dishes in, and comes in little packets - great for cleaning hard water marks from toilets!)
I thought he was recommending that stuff as an occasional cleaner for the dishwasher, not as using it in every wash?
He may have been, but they have several products and what he was showing is the detergent booster, I believe (linked below), and not the machine cleaner which is used periodically (which is just a stronger form of it that you run without dishes in, and comes in little packets - great for cleaning hard water marks from toilets!)
https://lemishine.com/products/dish-detergent-booster
I actually just looked at the new packaging, and it does say to avoid painted things. It definitely didn’t used to.