ivy, you have to decide what works for you. You already have evidence this diet works for you. It may not work for everyone, but you know what works for you.
Generally when people are adamant about something (like what you've experienced) they have a self-interest in what they're saying...not your interest or even a neutral interest in learning what the h#@l they're criticizing.
Conventional medicine has given us diet drugs that cause strokes, heart attacks, or don't work. Insurance will cover lap band surgery but not hcg. Diet and exercise works to varying degrees.
I had a friend tell me "you can't survive on 500 calories!!" when I told her I was starting this diet. She didn't want to listen. BUT, she had just had plastic surgery on her eyes and face...with complications!
Follow your gut (no pun intended).
And by the way, you have found the BEST source of information on this diet. The BEST.