There’s no checkmate here. It’s already all figured out by the millions of bidet users over the last hundred years. My wife uses toilet paper, I prefer a small basket of washrags to blot the water away. The rag gets slightly damp and there is no visible poo (having been washed away already), but I’m not going to use it on my face after so if there are micro-particles I don’t care.
I’m a convert as of 7ish years ago. First one bathroom, then all bathrooms and the whole family vastly prefers over TP and even our previous favorite, baby wipes. Plus no waste, it’s really wins all around. Especially on the butthole.
If you pack your groceries in boxes in the cart, wouldn’t that throw off the weight at the checkout?
Sam’s Club does it all with a self-checkout app and cart-scanning cameras at the exit. If you only get one or two things and don’t use a cart, then an associate needs to spot-scan on the way out, but otherwise it works great!