Tactical error on their part:

"The body [actually, the brain] needs a minimum of carbohydrates for efficient and healthy functioning -- about 150 grams daily."

-very good, induces uncertainty and doubt. It's been a couple years since I ate that many per day. Am I harming myself?

"The brain needs glucose to function efficiently, and it takes a long time to break down fat and protein to get to the brain,"

Hold it, you mean I don't have to EAT carbohydrates to GET carbohydrates? You mean if I've been burning fat for several years I've actually been producing my necessary carbohydrates? Is that why my brain still works?

It doesn't matter how long it takes to break down fat into glucose if the process is constantly running. It takes longer to ship food across the country than shipping it down the road to the supermarket. Uh-oh, does that mean people are starving on the other coast?