It’s filling power. You’re more likely to over consume when mashed/smoothied as it’s a quick hit whereas chewing a banana for instant takes time. SW do say when discussing this that ultimately it’s down to the individual how they syn it and if they find their losses stalling to look at this area.
I’ve tried everything under the sun, WW/SW/CC/Macros/Shakes and the only thing that worked was SW. Followed properly (not the way you see the big influencers do like Prickard) 1/3 speed on the plate, snacking on Speed, actually reading the book and not others bad habits and it worked very well at fixing my eating habits at the time. I wasn’t binging as the syns gave me the balance I needed whilst ensuring I could still have a takeaway or social life. I didn’t do “treat nights” or syn (binge) plates, if I wanted something I had it and rarely was anything processed. I could eat as a family, they enjoyed the meals I was preparing from scratch and the healthier choices I was buying. Oh, and my consultant has remained slim, runs marathons etc... (yes I know not all are but just some balance as I’ve seen several posts eluding to the fact that all SW consultants are overweight)
When I did Macro’s it was a nightmare. We rarely ate as a family and ensuring I meet the targets was stressful. Hated it.
I have deep rooted problems that will cost a lot for a psych to sort to get my food issues sorted (No buying that
tit HDE miracle book here
) but for me SW made sense and that has been the best plan FOR ME. That’s the thing, weight loss whist it is ultimately about calories deficient isn’t a one plan fits all and it’s finding what works for you