My opinion is that at the end of the day, what looks best matters most. If they all look as good as each other then there's no reason to block one form of creation (which would be a bit like blocking world edit from structures) and if you're going to say that it's unoriginal and has no skill or whatever then it should simply be that no method of terraforming is allowed.
I know they said something about pmc being 'spammed' with them but that is a failure of the system to upvote and show only the better maps in the what's hot etc. The system should mean that all the rubbish maps that some people only spend 5 mins on, like any other form of building, do not get votes and therefore don't benefit the poster or effect the community.
