Tim Cook wrote it. He's a gay man.
But apparently it's not Tim Cook who is using this as a 'rhetorical cudgel' (whatever that is). It's WaPo.
I don't know what to make of this. One interpretation is that WaPo have enlisted Tim Cook as some kind of patsy or useful idiot. The same Tim Cook who is CEO of one of the world's largest and most profitable corporations.
As Dr Evil would say, 'Riiiiiiight....'
I suspect Tim Cook is stating his actual opinion on this one; as a gay man, who doesn't want laws passed in his own country that would allow businesses to withhold service solely because he's a gay man. Seems sensible to me.