I don't want to get too involved into this unraid vs flexraid mess but I'll chime in on this and say that I have emailed him directly and received adequate responses and support on several occasions during his "vanish" period from AVS.
Just because he does not visit a third party website daily doesn't mean you won't get support.
There is after all an entire flexraid forum that is monitored, and he has PM and personal email for matters of support. I'm not sure his presence on AVS or lack thereof is any indication of the support you'd receive unless your demanding support through AVS in which case you possibly could be left wanting.
I've been a member for a decade, but I can't say I have visiting regularly during the entire period either. I think it's cool he is here at all. It doesn't make AVS any worse anyways.