Unfortunately most people aren't as understanding...at least not in general public
This is the problem. What you say or do doesn't matter. The general public will never become more understanding and you have no way to change that.
People either will or will not have a problem with the size of your balls. If they do, you need to move along to those who will not.
My advice to you is to refuse to engage with anyone who has a problem with the size of your balls and to refuse to engage with the whole issue. Why? because it simply won't get you anywhere.
I have a very different problem (chest & rib deformities) but I think the dynamic is similar. Please correct me if I'm wrong. To be quite honest, other people's responses to the messed up bones have always been a much larger problem for me than the deformities themselves.
I took a look at your pics. I realize this is not relevant to you, but I can't imagine many guys having an issue. They'd most likely be impressed and want to spend a lot of time licking them

I'm sure there are quite a few ladies who will feel the same way.