This is a lie and you know it. Everyone and I mean literally everyone cares about appearances. No matter how you slice it everyone has a style they are trying to project. This same goes for body shape.
If we had a pill that instantly -- without effort -- gave everyone a six pack and lean muscular body, everyone of your friends would be on it, because deep down they care.
Problem is one of discipline. It is not easy to wake up early and hit the gym or after hard day of working to do the same. It is not easy to not eat that doughnut (it is Sally's birthday after all and it would be rude not to take a free doughnut).
I am far from perfect, but I try my damnedest each and every day and I'm making progress and I've already noticed it affecting people around me, but I'm also fortunate that the team I work with is full of sport-y people, so at least I get to hang out with "my people", but I feel the difference when I interface with other teams.