Sutton was reacting to Salah's stunning interview after Liverpool's 3-3 draw at Leeds on Saturday. Left on the bench by manager Arne Slot, the Egyptian claimed to reporters afterwards that "someone" inside the club wants him out and also he has "no relationship" with Slot.
Sutton said on BBC Radio: "He's had a phenomenal career.
"This season he hasn't played so well, his numbers are down, he's not the same player and all of a sudden he's been left out for a few games and wants to live by different rules than other players in the dressing room.
"I find the whole situation absolutely ridiculous.
"What good could come out of what he did? What sickens me a bit about it is when Liverpool have been doing well, and players come out and speak, 'it's the team spirit, we all get on so great and everything's marvellous'.
"And now we're seeing Mo Salah for what he really is. It's all about him. It's him being selfish. I hate that sort of stuff. I think he's really let himself down here.
"It's all about who will go - will it be Slot or will it be Salah? And how is that beneficial for someone who loves the club so much?"