I think there are valid points for both sides. I do agree, if you follow the 14-day rule then you're not doing anything wrong. To me, it's the intent that is wrong. you know you're doing it to prevent someone else from going there even though you will not ever be there. what's the thought process behind that?
personally, I'm not a fan of people who set up camp only to spike out further. never saw the point of that, unless you just like to play house. if camp is on your back then everything else is in your vehicle, so for me I just show up 2 days early and park my car. if I come out and leave to go to town and someone else pulls into my spot then oh well, it happens. and yes, it has happened to me. I also had a guy pull into my spot while I was sitting there having coffee only to complain about overcrowding, go figure.
at the end of the day it doesn't really matter, be the person you want to be. camp or not, if someone else wants to be in that spot then they will be there. if you need to "reserve" the spot, then go for it. use your best judgement for the area and go have a good time while you can. if you think something is wrong, it probably is. the fact that you even asked says you're a better person than most of us, and on that alone I give you a pass lol.