Salman has asked Sid, Dey, Sana , Rashami to behave..or called them out for their mistakes.
Because he like them somewhere potential wise in life or show..so he spends his effort.
He doesn't call out Pahira as when he did in Mahira vs Sid on uncle and task injury ...Mahira got undue advantage everywhere and all anti Salman fans trended for her ... He has faced this in season 7 when it benefitted the contestant in positive manner and her biased attitude for her friend and convenient stands got overlooked.
moreover i don't think he likes them.. he understands it's their game and real personality.
Moreover i don't think he would like to talk to somebody who is openly two/three timing.
So this time he didn't even call out Mahira for her age shaming behaviour with Rashami and their condescending attitude towards other group ..
Neither did he called out Mahira for "aaj mann ni kar raha " previous week as it started from her. Madhu got annoyed and started that. He kept it to Asim and little bit Paras.
I have seen Salman uses reverse psychology for contestants/people he actually likes Kat, Daisy, Sona, Sauer, Aysuh..he strated completly ignoring certain ex when she blamed him for assault. He understands how Showbiz works..how to hype and de-hype..