Unlike you I have experience with multiboxing WG and know almost everything there is about it while you are making fool out of yourself. (The fact that you mention 1800-2300 rating as your credentials is hilarious btw)
Your arguments
1) blizzard removed follow because of multiboxing.
You are wrong. Not only it was possible to use follow in Wintergrasp like PvP zones in future expansions, it was possible to completely work around this in battlegrounds as there are multiboxers who played BGs everyday for last 7 years. Then you backpedaled on it.
2) multiboxing is overpowered in WG.
WG is extremely biased against multiboxers. The fact that multiboxers dominate WG just shows how unskilled the player base really is.
Whether you believe it or not you entire complaint about WG multiboxing is actually just a skill issue.
3) you and other people also dont like multiboxing therefore it must be removed
There is 100 other issues/mechanics that people dont like and affect more players daily.
I play high end PvP on my solo chars and I dont think I run into issue with multiboxer ever.
The fact is multiboxing is allowed. It's end game unexplored way of playing the game. You didn't bring any reasonable arguments to begin with.

