Helldritch
Hero
You got it reversed.Sorry, @Helldritch - I usually agree with you on many things but I just gotta call this one out:
The bolded is a classic example of DM favouritism, which IMO is one of the worst things a DM can do. You're not being fair to the "uncaring one", who like it or not is every bit as much a member of the party (and, on a meta scale, the group) as everyone else. Yes you're enforcing against a playstyle you don't like, but at cost of both trust and agency.
Further, as that uncaring PC has now become one of the party's senior characters, in-character that PC will in theory have more of a say over who gets recruited to join, and thus over the general tone of the party. Likely end result: more uncaring PCs, and a different tone of party and of game. That's how it goes sometimes, and the DM kinda has to roll with it.
No I am not fair on this one but the uncaring PC is now one of the weakest character not the one with the most seniority.