I basically agree with you, but the subtext is a little different.
I don't think this photo is damning in any way. It looks like some kids having fun in a pretty typical way. It's pretty normal for kids to "joke," and play around with gender. But this dude had some fun as a teen and now he's trying his damnedest to ensure no one ever gets to express themselves in a way that is incongruous with their agab. It's worth pointing out that that's shitty for some specific reasons.
That's a good point. It's just kinda funny because my reaction to it is basically "wow. maybe he actually used to be a real human."
I think probably this just illustrates that he's not genuine. That said I like your reflection that past behaviour should not be used as evidence against who a person is currently. That's probably a good baseline, even if the past evidence could actually be viewed in a positive light.
Anyways. Thanks for the thoughtful exchange.