Admins do have the ability to remove disruptive builds from spawn at our discretion however I will admit that we don't really do it and I definitely think we should step up when it comes to things like scaffolds especially.
I will always put time into removing as many scaffolds and random builds as I can but aside from that I don't do much personally.
However I'd also like to say that I don't want anything to be sanctionable - I think the last thing we should be doing is punishing people for using scaffold hacks in a certain vicinity of spawn or building pixelarts that are a tad too big or too close. I'd prefer if we simply just removed scaffolds (and other messy shit that nobody will miss), moved pixelarts back a bit and left it at that.
Also bit of a disclaimer that if an operator feels something is disruptive, to not deal with it themselves and instead inform an admin. Removing, moving or covering up a build yourself would probably be seen as sanctionable.