I am very aware of that. I reached a healthy weight 11 years ago now, and I still get people telling me with glee that I will pile it back on soon. I won’t, as I can’t fall face first in to Greggs anymore due to the coeliac diagnosis for one!
I will occasionally have a bit of chocolate if one of my kids pass it to me, like over Christmas. (The difference is, I can just have one celebration now and that’s it for months, I used to buy 10 boxes to eat myself over the Christmas period, id polish off one a day).
I have a family member who practically jumps up and down if they see me eat a hero - “you are off your diet!! I told you!” It’s the most ridiculous thing to witness.
The difference was, I didn’t go on a diet. I changed everything. On my own and for myself.
And I don’t obsess over what I eat. I couldn’t tell you how much protein or fibre I eat in a day - I just eat single ingredient, natural food, and cook everything from scratch (well, dh does, he’s the cook!)
And again, I’m not saying it’s as simple as swapping to full fat. I’m saying the advice is flawed.