system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: Borg queens shouldn't exist and the Borg would be stronger without them

The Borg collective is weakened by the existence of (and perhaps dependence on) Queens. The Queens do not have any practical value because they are integrated within the collective so any individual could have access to all the queen's knowledge and abilities. Since the Borg have nigh perfect unity of thought, it makes no sense to have a single body that has special duties and abilities. If the species were truly bent on assimilation and maximizing efficiency in pursuit of perfection they should eliminate queens. 

They aren't an ant colony in which the mindless drones, soldiers, and queens are biologically wired to do different things. The Queens introduce a weakness in that there is a single body that has higher value than the others. This goes against one of the core strengths of the Borg.
gpt
The reasonable conclusion would be that the Borg would have eliminated them if they were as detrimental as you suggest. Suggesting that their existence is more important than it might seem on the surface. It’s not impossible for the Borg to retain some kind of vestigial aspect of…whatever they were before becoming a race of assimilating machines, but it is unlikely given what we understand from the source material.

Of course the Queen was a narrative decision because they wanted a main bad guy in that one movie. But that’s neither here nor there.