Not a lot of point engaging in a p!ssing contest LedSled. Except to say...
I've been engaged in regional services for more than 20 years. In that time (as you could probably appreciate) I have seen just about every example of airmanship, from the excellent, to the truly appalling! For what it's worth I have always treated other airspace users with professional curtesy and respect. If we need to slow down or widen out to accommodate other traffic, then that's just a given. if you see examples of bad behavior, then I suggest an incident report should be mandatory. That'll sort them out.
Putting aside people's prejudice's, on both sides of the fence, I can only say... It's difficult to legislate against the odd D!ckhead or Arseh@Le, and beware of assumptions. For as any professional aviator will tell you, they are the Mother of all F#ckups!