When I started as a new player on Shard 1 the newbie zone was covered in signs from 2 years previous and telling everyone not to try and claim rooms. Pretty sure it was an Overlord bot signature. It was off putting and sort of scary for a new player. Was I invading someone's space? Where they going to come attack me? I decided to roll the dice and take my chances. Turns out I was completely safe, but I didn't know that at the beginning.
When you are a brand new player just fresh out of the tutorial the game world and newb zone are the first things you see. When you are looking for your first room all you can see is player's badges near you and the text on the controller. You have no idea who signed that or if they will take offense to you being there.
Removing the text from newb zone controllers isn't going to hurt any established player and may potentially help a new player. This isn't about us current players, it's about the future ones. I don't see why there is any push back on this at all.