He indicates that he was at least a mid-level functionary in the Reagan Administration - it seems to me that that means he would have needed to have been about 30 or 35 in 1980, which would put his date of birth probably no later than the vicinity of 1945 to 1950 [and maybe a little earlier - I'd be surprised if he were born any later than 1955]?
But that's just a guess on my part.
I'm pretty sure he's my age. The most direct and insightful essays I've ever read. When even bad tidings can bring pure joy, that's good writing.