What handheld is he playing in the top image? Looks too small to be a steam deck

Agreed. I saw this and thought it looked beautifully passive aggressive

Whose authority says it’s not sufficient? If they say they are nonbinary, they are nonbinary.

You can’t gatekeep being nonbinary. Not unless you’re prepared to define it explicitly, which will exclude many people - and not everyone will agree with your definition either.