Hello, My name is Faceless and I came to this thread to represent my client who has been falsely accused as being the weakest Akatsuki. Hidan is now pissed, and you know what splatters from his mouth when he is in a bad mood
Let me start. Hidan is one of a handful of people that is said to be immortal. Even without the essence of a basic element, Hidan can still pack a punch. It was he who single-handedly defeat two konoha guardians and it was also he who captured the two tail jinchurikki. If this is not enough to convince you that he's f**king strong, try lopping off his head, you all know what happens next.
I also can tell you that there is someone weaker than Hidan. His name is Sasori. Now let's review the facts: Hidan lost to the smartest shinobi in Konoha, but he didn't die. Sasori lost to a chunnin girl and a grandma

and he DIED.