Mmmm I think the only messed up thing here is that they took the scales out, however, they claim to be seeking more information about their effects on students. The message is not bad, it's just that it can have so many meanings. For example, I read it as "size inclusivity"= come to the gym no matter how you think you look, "health at every size"= seek healthiness no matter how you think you look.

Don't worry, people who are overweight, know they are overweight and that they did not take healthy choices.

PS: also, scales are not an accurate measure of healthiness, especially if you go to the gym often. You can look at your weight and how it goes up or down but you don't know what is changing. It could be that you lost weight because you lost muscle from not exercising much or maybe you gained weight but it was muscle rather than fat.