A lot of people don't get to choose what tools they can use at their place of employment. They are at the mercy of the IT department and inertia. Does it really help the world to add one more snarky comment on their day?
The comment described in the post here is definitely overly insulting, but in general, making the users feel pain is one way to give the people in charge incentive to change.
(Edit: I agree that the insults are pointless, so I don't think we're really arguing about anything substantiative. That said, I'm sure this designer guy couldn't give a crap whether it's pointless or not.)
-- yeah, I don't think we are really disagreeing on anything substantiative