Over eaters are drawn to the myth of SW that says you can continue with your bad habits, if you just switch around what you eat. Hence all the alarming 'free' foods and 'syns'.
I used to over-eat. I gained weight. BMI was 29. Years ago, (decades ago). I lost a huge amount of weight on Atkins. I continued to over-eat and thought I'd found the holy grail of how to lose weight and stuff myself silly at the same time. I got ill, stopped the diet, and because I hadn't realised that I had to eat less to lose weight, I regained it, and some.
I get that some of us want to eat loads of food and lose weight. But this won't happen. You can, however, eat enough food and lose weight.
I eat three meals a day, and probably around 1600 calories a day. And I maintain my weight loss of 4 stone, that was achieved by dropping to 1200 calories a day. I'm no longer losing at 1600 calories a day. This tells me that I eat enough for me. I'm active, tall, but late 50s. Some people my age, eat a lot more than I do, and they think they eat normal amounts. I know that if I ate like them, I would gain. I would definitely, without a shadow of a doubt gain weight if I adopted the SW method.
We're all different. But we often don't need as many calories as we think we do. A lot of people would lose weight at my calorie intake, so this shows that our intakes are different, but a lot of people, and I was one, think we need more calories than we do.
It's about cutting back on the processed foods, unhealthy fats, and increasing the salad/veg. It's about portion control. Cutting out sugar was key for me, and the refined carbs.
You don't have to pay to be told to do this - but you do have to expect to be hungry for a few weeks whilst you adjust. So what? So, at 4pm you're ready for your 6pm dinner...so, that's not a problem, accept it, and push through. Willpower! After a couple of weeks you'll be satisfied on three meals a day, that are portion controlled and healthy.
You won't obsess about syns and fry shite, and free foods and "healthy" extras. You won't recoil in horror from an avocado, and rush to the Muller Frights. A lot of people want the best of both worlds - loads of big meals, snacks and lose weight. SW rely on this - but it rarely works, because like I found out on Atkins, to be healthy and well, you need to adjust your food intake in a healthy way that allows all food groups, in the right amount for you.