We said a lot about Salah and the trio but let's see a trio is made up of three players, not only Salah. Salah must to get support from other two players and he has to support them to. Together they made great success for the trio but only them can not bring Liverpool to success. They need support from midfielders, defenders and goalkeeper. Not yet mention about Klopp and different staffs in the club.
Salah is a most recognizable player in Liverpool but he can be their problems too. At least we see how Mane was not happy about that. It can be one of reasons Mane left Liverpool. I my opinion, I don't think Mane has less contribution for Liverpool than Salah. But I disagree with some on field reactions of Mane against Salah, that is bad and unprofessional.
Privileging one player will indeed backfire for any club. Although it is true that the player is a player who contributes a lot to the club. But of course there are players who don't like it when their club has players who are needed like that.
On the one hand, we can't blame the club, because some of their supporters also do the same.