Because no one likes cocky fuckers in this world, so when you leave a number 1 guild (Method) and go and start your own guild then claim 'your the best pve guild' , it makes you look a cunt if you cant deliver.
Not only that serenity isnt smart enough to realize that the brand name 'Method' holds the 'Number 1 guild in the world achievement before nighthold not the individuals in it.
Whats this? do people think that if you leave you get to take its credit with you?!? hahaha
p.s gz exorsus well done