I also hope he returns. He and I would often ninja each other with similar posts at 5am, although his were much more detailed(long winded )than mine.
I believe he may be staying away because of some covid discussion way back in May, where it got a tad political, and he completely misinterpreted a post by psuhoffman, and made a detailed, ranting post that was simply wrong by any objective measure. We all make mistakes, and I hope he comes back, as he seems like a good guy and has been a valuable contributor here.