Hey Pumpkin... well, it depends on the person's physical activity, height, weight, and type of work they do! Some people on this lifestyle don't count calories and some eat less than the 30bad community recommends, they just eat what the 80/10/10 book recommends which is a simple calculation of calories needed as you would do in any other diet. It really comes down to knowing your body, being honest with yourself about your daily needs and seeing how you feel with it! Generally speaking you will feel better eating more calories... you'll also have more energy to exercise which in terms makes you fitter..the more the muscle, the more calories your body will burn.
I think 30bad community tends to say that non-801010rv restrict calories because mostly they don't eat till satisfied, some actually restrict with fear of getting fat, and others simply restrict because they consume a lot of consuming empty calories (the body gets too much food and not enough nutrition).