I can tell you from personal experience, I have used a similar company for the past month or so.

In terms of packaging, they use cardboard and paper bags, which I think is better than plastic from all the packagings if I bought everything at the store, but then the chilled goods are in a aluminium/plastic bag which I guess does not recycle super well.

But where I really see the difference is that they proportion all the ingredients for the recipe and the amount of people, so you have zero waste of the ingredients. When we buy at the store the packaging is seldom right size for the recipe, so I end up buying too little or throwing it out later. I hate seeing food go to waste so this is a big one for me.

The last thing I like is that it forces me to eat more varied veggies compared to the recipes I cook normally.