I think that's very odd.
There's always riders 'disposing' of their equipment like that! Millar threw his bike over the barriers a couple of years back, Bradley Wiggins chucked his wheel off the side of the road, even Chavanel just dropped his bike the other day when changing for the 48th time.
I like Cav's passion, it's a bit childish, he didn't perform, no one else to blame, but it's not remotely 'insulting' to people who buy their kit! Anyway you don't really seem to mean insulting, more that it's a bad example, in which case there are still other better examples. Tom Steeles throwing his waterbottle at someone in the sprint Robbie McEwan(?) headbutting someone. Cadel Evans.