Nobody said it was stressful, it’s simply a huge chunk of time gone, would much rather spend it with family or doing the cooking itself. Go to any grocery store in America, even if you have a specific list it’s takes a good chunk of time. Why would I want to spend it smelling the veggies. I am sure you could probably get a slightly better taste or quality but I imagine on average it’s minimal. Everyone is different though. I cook a lot, have worked in kitchens, but with kids and a job, I have little interest in being selective on a daily basis. I can simply spend 5 mins, add a list of items to order, get it delivered and have saved probably a good hour in total.
I do think it’s a concern but I think it’s no different than the exact problem that exists today in these marketplace operations like Amazon. I know for me I will actually split my shopping up and often shop less with an Amazon and more with a Walmart because of it.