I think the point is being missed to a great extent here.
There is a limit to the security force, and the amount of antagonists we have in a given round is meant to be tailored to that amount of Security*. It's part of the balance of the round.
The problem is borgs allow that limit to be surpassed to such a degree that, in that round for instance, there was essentially +50% more Security than there would normally be.
*(And, to reiterate, the HoP simply increasing the officer limit is not the same thing, as it requires additional equipment from cargo, an experienced HoP, coordination in command chat, and then waiting for players to take the slots and get up to speed. Whereas secborgs start with everything they need and have sometimes been lurking dchat so already have an idea of what's going on, and even if they try not to act on that info it's still a situation they are comfortable going into.)