I've been flying online flight combat simulator's since Air Warrior in 1996, and I've not noticed that pilots today fly any less honorably today than they did 15 years. On the other hand, I've noticed that a small minority of the community has become substantially more outspoken, critical and insulting to their fellow gamers.
These insults are really the only dishonorable behavior I've noticed, but in fairness it was already there (to a much lesser degree) in 1996. The big difference today vs. then is that the rest of the community has grown weary of chastising these outspoken whiner's, which in my opinion has emboldened them. In my experience, treating others with respect is a prerequisite for being honorable. The day you log on to the forums, or sign into the game, and use that time to degrade or insult your fellow gamer is a day that you have chosen to squander your honor. In any contest I've ever been in, there have only been 2 means to measure my opponents honor. That being whether they follow the rules, and display good sportsmanship.
In my opinion, criticizing or insulting an opponent is poor sportsmanship, and detracts from the fun that all hope to find from Aces High.