All good points. But a bit orthogonal to the point I was making. This random website apparently did a podcast discussing some of the points you made (and others have made for some years now). Subsequently Rush mentioned some of these points on his show. So therefore they think powerful people in Washington are listening to their podcast and telling Rush what they hear. Which means they are basically delusional, and calls into question their bizarre claim about a high-level birth certificate investigation.
I see. That point was lost on me, but I agree seems a bit egocentrically delusional. I don’t listen to Rush but read some transcripts posted here from time to time when I see them. He has always been into computers and tech. So he’d have at least a passing interest in those other topics (speed of transfer etc) about the alleged hack. And because it is tied to Hillary and national politics it’s an even greater interest to him personally.
I have no idea where he got that thought on this birther panel. But I would think he has a few staffers who do research and organize the emails from viewers. It could be as simple as a couple of audience member emails or callers (who don’t necessarily get on the air but do tell the producer what they want to talk about) got wind of it, maybe from this podcast or 2nd hand. If he has 20 million listeners there are probably many tens of thousands of them who eat this birther stuff up and send it around to others.