I'm sure you can find some quality items at Walmart, but you have to shop carefully.
If we were talking Costco healthcare, I'd be all in. All the "cut the fat" talk you mention, and you still end up with a quality product at a reasonable price.
For any arbitrary shopper-item combination, as long as the item can fit the basic merchantability requirements over the duration of the return period, the only significant criterion is going to be price. Knowing this and then ensuring that they have the cheapest merchantable items in every product class is how Walmart became the de-facto shopping nexus everywhere that major social and/or governmental interference hasn't stopped them. It's the place to go to get the stuff you have to buy, not the stuff you want to buy.
If your standards are too high to wear a shirt that consists of 80% recycled plastic, you don't buy shirts at Walmart. But that doesn't mean you automatically have the same high standards for a garden spade, a toilet seat, or a kitchen spatula. If we imagine that we need all four of these items today, we go to Walmart to buy the latter three and then use the money saved to invest in a better 100% cotton shirt from $FAVORITE_SHIRT_VENDOR.
Disagree, quality matters.