Lets say you make a warp called /setwarp KylesParkour. Someone else could also go to a random place and also do /setwarp KylesParkour, then doing /warp KylesParkour will bring you to the location they set the warp to instead of the one you did. This is very problematic when you work very hard on a build in a random location, and the only way to get there is with a warp. So, I think stealing warps should be disabled. If you do /setwarp [a warp that already exists], then you should get a response back that says "This warp has already been taken!" Im just gonna respond to a few counterarguments now.
Just ban people who steal warps
When someone steals a warp and no mods are online, its impossible to tell who stole the warp. Even if a mod logs on stealing warps isnt tracked, and also even if the person who steals it gets banned, the person the warp was stolen from still loses their build.
Just do /back and reclaim your warp
If someone goes away from their build and teleports to someone else, then someone steals their warp, then they go to their warp only to end up at the stolen warp, then doing /back only puts you back to where you were first, and doing /back again just brings yiou back to the stolen warp.
Die
k