The one in particular that you brought up is how much the girls don’t want to be too muscular, but rather just slim.

I haven’t seen this show but isn’t this just realistic? Most woman just don’t want to be ripped or bulky. The real danger is woman thinking they are definitely going to be all buff if they work out, and thus not working out or doing sports. And not doing any of that is not good for your health. Woman should know that gaining significant muscle mass is already hard for men, let alone woman, so they can work out safely without worrying too much. As long as you don’t hop on the juice and/or devote your life to the gym.

I mean, her role is to absorb damage for the party, muscles are kind of a prerequisite.

It’s a show with magic and stuff, so I don’t think that holds. Reasoning the other way around, if it would hold, then given her appearance Darkness shouldn’t have the physical ability that she indeed has.