In a way, I think this is a little akin to what is happening in the music industry, ie artists making the pragmatic choice to forego income from record sales, instead focussing on income from live perfomances. Without second guessing his intentions or sincerity, Eric perhaps has made a similar pragmatic choice, opting to forego income and the effort to generate that income from print sales, in favour of other means, in his case, perhaps workshop income.
EDIT: the deeper question here perhaps, is whether the market for one's photography is more viable than the market to simply sell to other photographers. If the latter, that is depressing, although in my opinion, most photographers price their work too high. I think the market can bear more than free, though.