Why is labymod banned?

[DragonZftw]

Just asking, why is LabyMod banned on the network? I don't see why it has hacks or anything, not like Wurst or any hacked client...

 

[Runkelpokk]

labymod has health tags even if the server would disable them it might be possible to bypass that and to avoid confusion which labymod mods are allowed and which are not labymod overall is forbidden