"For me this sounds like: if the others do the coordination work of picking a date and the
corner stones of the distribution, Canonical may want to use the results. In other words:
offloading their core work. I wouldn't call that a nice offer."
Be fair, that is a rather biased way of interpreting Shuttleworth's statement. What he said is that if the other major players agreed on a schedule, he would be willing to change Canonicals to match theirs. I'm sure that if the other distributions expressed an interest in his idea he would be willing to work with them on organising the synchronised schedule.
It is fair enough to criticise the amount of code Ubunutu contribute to the wider community, but I dont think it is fair to twist Mark's words that way.