Why the body shaming?

I see a lot of things in recent about body shaming against females; so I ask, why do females body shame males just as much, and nothing comes of it?
I'm a bodybuilder and of course I like to show off my body when appropriate; I wear speedos or swim briefs to the beach and all the sudden that makes you gay or feminine. Nothing serious, just an observation on social construct.
Why the body shaming?
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