Speechless?
Maybe if he'd publish this 30 years ago it would be impressive.... it comes across that this is a recent change (social media is a place for "here's my mind fart right now").
Might have been better off in a memoir, it would probably have come across more as a distant recollection.
I dont think we have all the facts here, but in general it is a positive thing to be able to change your mind.
I dont want to be in a society formed by children's parents doctrines. But to be declaring this at 50 implies it took a long time to learn the pretty basic lesson that a smart cookie should pick up quickly in his mid-twenties, as soon as he was exposed to 'others'