Given that they require air mailing boxes full of (mostly, by weight) frozen liquids all over the place on a weekly basis, I'm not convinced that these meal kit services can ever be made sustainable. Compared to that cost, worrying about recycling and whether their food suppliers are organic or not seems like it's probably just bikeshedding.
It might be cool to see what a company like Imperfect Produce could come up with in this space.