Quite. I remember watching the Simeoni incident unfolding on live TV and wondering what the hell was going on. Whatever it was, it wasn't bike racing.
Surely part of what contributes to winning in any sport is establishing not just physical but psychological domination over your opponents? The particular cause of Armstrong's incident with Simeoni was drug related which puts in an unacceptable category to us as we view it now. But set the specific cause aside for the moment. I think that for a leading rider and his team to send out the message to all other riders that they are not to be messed with establishes an advantage that is likely to be to their benefit on a later occasion and is part of what it takes to win in sport at the top level. Sure, it makes you an arrogant bully, but people who win without having a streak of the arrogant bully about them, without having a willingness to dominate an opponent, are, I suspect, rare. (Senna and Schumaker won more races than Damon Hill, and Hill only won his championship by consciously becoming more selfish) This is one of the reasons why I am very happy not to be competitive.
Blaming Arnstrong for being a drug cheat and a liar and for bringing the sport into disrepute, assuming all those things be true, is fair enough. Blaming him for wanting to beat people seems a little perverse.