That isn't silly, that's one of the only ways to exercise agency under hypercapitalism. I recently cancelled my Amazon Prime membership and got a Costco membership for the same reason. I don't get every product I want, but I'm also okay with that.
It's a 500B company that undercuts everyone else with incredible efficiency, just like Amazon. It's an example of how capitalism can be great. If you really want to get of out of capitalism, you can just buy directly from farmers or grow your own food.
The whole thing about no ethical consumption under capitalism is a just a way to enjoy the conveniences of capitalism on a moral high ground. It's totally doable, you just might not enjoy it haha.
I guess the angle I was coming at it from is that they pay their employees a living wage. I need to buy toilet paper from somewhere, and between Amazon and Costco I would much rather give my money to Costco.