I'm unquestionably in the "IT crowd", but I fully heartedly agree with what you're saying. It's almost like my colleagues are actively looking for things to complain about, whether or not they truly believe there's a problem. It gets really old, really fast.
99% of the time I'm on your side, if you really look into why Apple makes the decisions that they make, they really are for the better. If I think back on the past 2 years, I think it's safe to say I've been on Apple's side for every single major decision, even the controversial ones.
But I just can't agree with this one as it's been stated so far. I can't imagine that by the time Lion is released, there won't be a way to do a clean install from a flash drive, but if there isn't, I just can't defend this decision.