Surprisingly I see him commenting on Facebook.From his profile:
DSM5
Premium Member Tipping Comp 2021
First Grader · 51
Joined
Feb 27, 2005
Last seen
Yesterday at 11:40 AM
It would appear from that that he is still around but chooses not to participate in any of the forum discussions.
It’s a pity as he was a much valued member here for a long time.