User blog:Convoyer/Why duplicate categories?

People, why you do this?

https://simpsons.fandom.com/wiki/Category:Attempted_Killers https://simpsons.fandom.com/wiki/Category:Attempted_Murderers

and

https://simpsons.fandom.com/wiki/Category:Seniors https://simpsons.fandom.com/wiki/Category:Adults

Admin, would you kindly delete the superfluous ones?