If the "war immortal" was actually still strong and not just a remnant controlling a kid it'd make sense for them all to come greet him, but to have all of them drop what their doing and run over for a smidgen of aura to grovel is silly.
Or what, is this the most loyal cultivation novel ever?
Previous world son of luck felt all the women betrayed him, but most of them never gave a shit about him in the first place so that's not really betrayal right.
MC is betraying people all over before killing them though.