https://imgur.com/2VITThZ - screenshot of the bonuses tab, checked it with vanilla and by default, without any research, there is a +5 robot count
then i tried to reproduce this behavior with just vanilla and this mod, and it kinda did bork - +5 robot count is still missing from the bonuses tab, but without any other mods, the destroyer robot count is being limited by the maximum robot follower count, i.e. works as intended by this mod, so this behavior(unlimited amount of destroyers) is certainly some weird interaction with one of them mods that im playing with, listed above
btw everything(except unlimited destroyers) fixed itself once i researched the "Follower robot count" tech
i wanted to find out wich mod causes this unlimited destroyers behavior, but im kinda lazy, besides i guess i can just "honor" it and limit meself, so tis not a big problem for me