In any event pointing out the clear lack of familiarity with the technologies they are (not) using is not pre-judice, it's post-judice. I don't think it's unfair to also say that they have not demonstrated technical leadership very often in the underlying infrastructure technologies they depend on, bzr and upstart being two examples. They need not just the cojones but the talent to pull this all off.
I should also point out that I wish nothing but the best for Ubuntu, which is why I'm talking about this in the first place, if I didn't care I wouldn't comment.