I conducted that interview with Joe, over a year ago now. It's been up on the web for months.
Out of full disclosure, Erik contacted me about interviewing him earlier this year and we swapped messages. He candidly said in so many words he was tired of Joe and all the talk about doping, and told me he wanted to talk about what real pro cycling was like, and I said I was up for it. But he didn't seem like he had an axe to grind. Just an outspoken, honest guy. I somewhat casually asked Joe if he knew Erik and he said he had met him and raced against him, but didn't have anything negative to say about him, or much really one way or the other. I never got the impression from either that they ever got into it, or even really had that much interaction other than racing against one another on the circuit.
I have so far been unable to interview Erik as first my mother, then my father passed away this year and it's been hell dealing with it emotionally, and with the estate, family, bills, taxes, government, etc. I told Erik any interview would thus have to be on hold, and I would try to contact him later. He said he understood and that this was obviously a more important issue. So I don't know why Erik is upset at Joe, or perhaps me.
As to what one expects of Joe, or what they would have him do, even I don't know the answer to that other than to just keep telling the truth, and from my indication it seems that's what he did in this interview, and has tried to do ever since.