In principle, and here's why:
Hitler believed that the strong had the right to kill the weak.
Hitler used his blitzkrieg warfare in order to eliminate resistance for a "greater good".
Hitler had support.
GY farmers believe that the "skilled" have a right to destroy the "unskilled".
GY farmers use their "skill" to completely dominate games, making it literally impossible to counter a well-planned GY farming.
There are entire guilds made for GY farming, and few to none who oppose it.
So yes, Dory, I'm comparing GY farmers to Hitler. IRL, you guys could be great people for all I know. But as far as in-game conduct goes, you guys need some work (you guys = GY farmers in general).
Edit: completely coincidental that I chose green yellow and red O.O