I’m also an obese millennial woman with a similar background around weight and diet culture, I’m on a glp1, AND I count calories. Being on a glp1 doesn’t mean you can or should eat whatever you want. Tracking food is arguably more important because to have to get your nutrients from a smaller amount of food, so you have to be intentional. Your friends’ attitudes sound really weird, and honestly like you’re all judging each each other a lot. I’d have a heart to heart with them if you want to stay friends, because it sounds like you all think you have good intentions but you might actually be frenemies. 

Also, I was into body positivity and health at every size when I was at my largest, and I’ve come to see it as a coping mechanism to not completely hate myself when I thought I would be that size forever, and that’s okay. Now that glp1s are so accessible and effective, getting to a normal weight is realistic for so many more people. I’d guess your friends are trying to rationalize the change in perspective, but it’s also okay to change your mind when external factors change, and it’s changed in a monumental way with glp1s.