>>362897913
https://www.youtube.com/watch?v=pzHYESXYf4g
Because you have less originality and personality than actual video game npc's. 
You don't say anything and have no dialogue and look like all the rest of the unedited merinos makes you less of an npc and more of a trash mob...
Now that I think about it the majority of you merino mutes are just farmed in Just H instances for notches on peoples ERP belts so yea.. you aren't even an NPC you're just a trash mob.