...I don't think leaders have quite this same issue to learn about because they are less likely to ever be much smaller than their female partners, and therefore less likely to ever assume they will be held up by her (or be unaware that they are so)...
I agree with your comments. However, I think there is as much variation in the sizes and shapes of women as in men. If I want to dance with a small, or tender, or even an older woman, I have to lighten my preferred way of connecting. Some of my enjoyable partners are bigger than I am and I have to dance quite strongly with them.
I do think it's a common mistake for followers to think they should hang on their partners, and leaders probably never do this. (How would I know)? The followers' energy should go from the floor up into the leaders chest, at least in apilado.