As of now and in the supposed year(2021),I doubt there will be any reason whatsoever to reveal satoshi's Pm's for whatever reasons,as such informations remain private as Theymos has reiterated numerous times,but you just get that feeling that with satoshi things will be a bit different as we've got numerous groups clamouring for his identity and probably an inkling could be gotten from his private messages.
I've rethought this, and I won't be releasing the PMs in 2021. I'm convinced that nobody will ever identify Satoshi no matter what info comes out
And this I think this settles it all, for now at least