The enshittification has taken even the foods that were staples of the carb and sugar funnel. Many people aren't buying these foods not just because of GLP-1s, but because the quality of the food itself has gotten so bad. Doritos for example have almost no cheese dust on them, and the chips themselves are much thinner and now made with palm olive which makes them crumble rather than crunch. The satisfaction of both the flavour and the mechanics of eating Doritos is gone. Cheez-Its are more salt than cheese flavouring, and are overbaked until they're thin and crackly like flint flakes so as to maintain volume while using less dough. Faygo has reverted to using sucralose, which is mildly toxic and is a known carcinogen. Sucralose also tends to trigger sugar backlash, where the body mistakenly assumes it has taken in far less sugar and carbs than it actually did and then proceeds to rush and crash. Gushers come in packs of just four to seven now, and use far more xanthum gum as filler which makes them trend more towards chalky than gummy. Bagel Bites are now just bagels with cheese, as their is almost no sauce and hardly any toppings. Corn dogs are likely to be chicken or chicken and pork with soy fillers rather than beef or beef and pork. Little Debbie Swiss Rolls have a chocolate coating so thin that you're almost guaranteed to find holes on the top and sides where you can see the bare cake and have also switched to using palm oil.
I could go on and on. But the point is, these foods are no longer a source of contentment. I've spoken to a lot of people who stress eat who have told me that the terrible quality of their comfort foods has become a stressor in and of itself. They eat an entire box of Cheez-Its without noticing because the thinness of the cracker walls and the salt triggers them to eat more, they feel sick after eating frozen tacquitos because the tortillas have so many fillers, or they get anxiety that they've wasted their money because they get so little in a Payday bar. It's driving them away from these foods.
On the upside maybe it will drive them to cook for themselves like it has to you.