What does he recommend instead? (I suppose eating in-season fruits would solve the issue.)
Also, will you be getting enough EFA's and fibre on this diet? Not the type of fibre found in fruit, but the second type.
Yes, you will get enough EFAs from the 80/10/10 diet. Fruits contain small quantities of EFAs in the correct ratio for human consumption.
The fiber found in fruits is the digestible kind that helps digestion and absorption. The other kind of fiber (the indigestible kind) is, contrary to mainstream belief, unhealthy and can abraid the intestinal walls.