They would be off base. I feel the same way about bodybuilding as I do about bikinis and other public displays of bodily immodesty.
If I think an opinion is inherently disrespectful (such as the comment I initially took issue with), then it isn't sensible for me to respect it (the opinion). What I respect is a person's free will to come to whatever opinion they will. Doesn't mean I think the opinion is right, nor that I respect the opinion, but I respect that once I have said my piece, people will consider my words or not. But I see no need to go beyond expressing (even if a tiny bit more than mildly) my disagreement with said opinion. In other words, I stated my position, end of story... or it could be the end of the story, unless people want to keep the debate going. I am sure there is no shortage of people willing to deride my traditional position on modesty, and the inherent dignity and privacy of human intimacy.