I agree with everyone above - PP is a great attitude to eating and lets you eat what you want within a reasonable limit. It's a great system, encourages healthy eating but by no means stops you eating what you want!
I felt the same with SW - the moment the C found out I was an ex WW, she ripped into the diet, giving it the whole "restriction/starving" line.. that no-one loses because they get bored of being hungry. It's rubbish! You only go hungry if you are silly with your points! And SW just didn't account for days out, quick food and just pure laziness..for me, that means one thing. PIZZA!!!!
Like all healthy eating plans/diets, it just doesn't suit some people, and that's probably the negativity you're reading. It doesn't suit me, but I believe that's down to health issues at the minute. I will be going back to PP once I'm fixed.
HTH xx