Since you need to understand what is ''metaphor'' and what is literal, here another scan to debunk your argument:
Can
Doflamingo bend the will of the ''
World'' or is that just a metaphor? Learn what metaphor is.
WB doesn't have a government prophecy, he said someone will challenge the world you still keep repeating the same nonsense thats world = world government, its not. Government never stopped Yonko from doing anything, Yonko are ruling the new world as they like. Even then, BB can replace the world government leaders as Xebec planned to do, since Teach is destined to surpass Xebec, its possible he can replace them as well.
WB talked about things in Marineford battle, who was the winner of that battle? BB, who stopped the war? Shanks. Still Yonko decided things not the government.
Your scan doesn't show Imu is doing anything, thats clearly an ancient weapon, similar to Shirahoshi. Its a weapon that can be used by other people, meaning there are places that can be use same as Shirahoshi can't be use everywhere, Imu is not going to destroy his own island, its not usable in 1 v 1 battles.
Even SSG is under the control of York, even if Gorosei gets the control of them its not guaranteed Vegapunk won't take it back, again baseless assumptions.
Oda already said the
One Piece story is based on fighting against Yonko, if you find any material that states the main story and main rival is government then show it here.
Even Doflamingo said he could take that Imu's power if he had the Ope Ope no Mi, Teach is going to surpass Xebec, do the math.
Sure, its the same people that
threatened by Doflamingo, and they failed to kill Doflamingo after Doflamingo learned their secret
''When they realised they couldn't kill me''
These people couldn't do anything to Doflamingo and gave him what he wants instead, but somehow they can ''demolish'' Yonko?
That pathetic narrative which is government wants Yonko to exist is debunked once they declared
''Marine Hunter'' Cross Guild as Yonko, who are ''major, major threat'' to the Government. Government is desperate vs. Yonko.