Opinion has been the mother of strife as regards airspace management in this country.
I think if you substitute the word OPINION with the word ARROGANCE your statement would be pretty right.
It's not just in aviation we have this problem.
Car drivers hate bike riders and think the bike riders should stay off 'their' roads.
Truck and bus drivers want the road to themselves and hate car drivers as well as bikes.
The filthy rich hate the fact that they can't own the beach in front of their place and must suffer the indignity of watching the plebs play on 'their' beach.
The answer lies in both proper data and consideration for others.