...well they can be. I acknowledge that the nutritional value of smoothies can vary wildly.
The NHS doesn't think so
www.nhs.uk/Livewell/5ADAY/Documents/Downloads/5ADAY_portion_guide.pdf
They think you should only count two of your five a day as smoothies.
Why on earth should it matter if it is blended or not?
My smoothies should definitely count. They usually contain plenty of veggies for a start (my kids only figured this out recently after drinking them for a decade or more) carrots, avocado, kale, red cabbage, spinach etc, a mix of frozen berries, mango, peach, peanut butter or yoghurt, citrus including some of the peel for the bioflavonoids (and flavour) sometimes wheat germ, lemon flavoured fish oil or flax if they are replacing a meal. They don't often have banana in them because DS#1 can't cope with much banana. They don't usually have juice in them because we don't often have it in the house. Sometimes I will include olive or sunflower oil in them if they are instead of a meal for the boys and unsweetened cocoa or carob for flavour.
Now admittedly it would be rare to have more than one a day except when I was trying to give DS some extra calories to replace those that were being burned up.
How is a bowl of cooked veg supposedly superior to this? If I blend a veggie smoothie then heat it it is soup, does that now count? By my reckoning it has less nutritional value now.