Not that i’m aware of, some of them are just better places to build, defensively speaking. They won’t lead to decrease server performance, they haven’t in my experience at least.
I heard this before on another forum, do to several of black towers and building being presistant at long distances. And they would load in stuff attached to them.
Never noticed it myself… so kinda just ignore it. On Ps4 anyway.
Sound like someone was mad people were building in hard reach spots… and made up something to counter it. I could never find any truth to it.