I have wondered the same, and until recently was cooking for one, so it can become wasteful and overwhelming quite quickly!
I also think we ought to use it as a rough guide, which was developed to help people move from a very overly processed diet onto a more sustainable, fresh way of eating.
If we already eat a good amount of plants and healthy foods, it is easy to overthink it, which I am guilty of on occasion. I love the whole topic though so do enjoy musing about it!
I manage it with a good selection of herbs and spices, only some are fresh. I also built a good collection of nuts and seeds, but it was quite pricey to begin, because I prefer organic. Once many of the supplies ire in your kitchen, it is much easier to move forward with it.
Don't get bogged down by the obsessives online, honestly, food topics are rife with unpleasantness and fictitious one-upmanship. It's ok to by pre cut and bagged, frozen and tinned, it's often even healthier (frozen berries, tinned toms).
Most of us can't afford to restock (not to mention source) and use up a rainbow of 10 different veg every day, so keep in mind your tea, coffee and even seeded crackers count.
A selection of frozen, dried, fermented, jarred and fresh are just great.
Many stores offer authentic ferments (yeo vallet kefir, RAW sauerkraut, etc) so we don't have to make it all ourselves.
I def think the ZOE way is somewhat unnecessary, and remember, it is designed to enlarge corporate profit above all else, so do bear that in mind. I think there is a massive push to create constant 'content' for the videos and interviews, which can feel overwhelming and somewhat dizzying.
This doesn't mirror real, lived life, for our budget or our guts.
We do not need to pay extortionate subscriptions to eat well.
Remember, for millions of years our gut biomes were just fine eating a fairly local diet, and along with activity, was enough to keep a good balance. I doubt it anticipated a 20th century explosion of globalised foods coming together under vast supermarket roofs 
Try to keep it realistic, and make sure to enjoy it.