I have a couple of friends who use similar services where we live. In one case, it was a woman who was sick and tired of always having to maintain house, work parttime, look after two teenagers with lots of extracurricular activities, and a (since-divorced) husband who tended towards the traditional dinner must be on the table when I get home from work idea. Ok, there was a lot going on that had nothing to do with food but this service turned out to be a huge help for her. She was tired of trying to come up with things to satisfy everyone and had gotten to the stage of resenting (I think cooking became the thing that all the resentment from the fairly toxic relationship was diverted to) the constant pressure to have something substantial and interesting on the table every day. She used to complain that she hated cooking but at some stage realised that actually she always used to love cooking, when it meant spending some time in the kitchen, chatting with whoever was there while preparing the meal. It was the "have to", "no support" aspect that was the problem. But that was alleviated to some extent by this delivery service as, even though she did still have to do the cooking, she at least didn't have to invest so much time and energy into deciding what to serve or shopping for it.
The other friend, also with older teenage sons, as well as a very ill husband, and two jobs simply found it convenient. Everything delivered, no need to think.
For both of them, an unexpected benefit came from the kids finding it all kind of cool and actually sometimes taking over the cooking because they wanted to have a go.
I was always inclined to scoff at the idea but there a lot of people who could have situations where it's a handy service to have. There are lots of people who just don't know how to cook and this can be a stepping stone towards getting there. I know when I first started having to cook for myself, I had an extremely limited repertoire (stepmother banned me from the kitchen, so I rarely got to do anything at home). Jars of Ragu for making bolognese were standard. Then I started to look at the list of ingredients and eventually realised that I could just buy a tin of tomatoes and a bit of this and a bit of that. It took a while but eventually I got there. Similarly, the first time I went to a Mongolian Barbeque type of restaurant, where you can assemble your own ingredients and they cook it for you, it was a huge eye-opener for me. They had some suggested combinations printed out so I actually had some pretty good dishes and it sort of showed me how to mix spices to create something delicious. And opened up a whole new range of cooking for me, too, where stirfries now featured every week.
If these services had been around when I was in my twenties, I'm pretty sure I would have ended up using them. Of course, the really sad cases will be when we start to hear of people paying for these services and then still going out to eat or ordering takeaways anyway. That's when they'll really belong on the Antimustachian Wall of Shame!