I would be interested to know if this is true. I am a gym rat, a competitive body builder. In the off season I weigh 190 pounds and for contests I get under 176 pounds.
But even when I am cutting weight, I do not eliminate carbs entirely. I simply reduce them. Muscles need carbs, or they lose size. During this cutting phase I will lose 1-2 pounds per week over 12-16 weeks. But my carb intake at its lowest point during this period does not go below 125-175 grams per day. Simple carbs are shunned, breads, rice, pastsa, etc., as well as fruits. I rely on complex carbs like oatmeal or red skin potatoes and veggies, mainly broccli and cauliflower.
I have had to diet too hard at the last minute to shed fat, where my carb intake has been as low as 40-50 grams per day for a week. But I lost a tremendous amount of muscle in the process.
Did you ever try the Cyclical Ketogenic Diet (or Targeted Ketogenic Diet?) by Lyle McDonald? His ideas were all the rage a few years back. I used those techniques to get to an alltime body fat low, while maintaining all my strength (I assume I kept the large majority of my muscle).
Basically, you go lowcarb, but you time your carbohydrate intake for either specific days (2 day pigout) or specific times (30 minutes before a workout, and up to an hour afterwards).