It really depends on how Julian feels on any given day but the answer is "both". When he's having a good day then he thinks that maybe they're sincere, maybe they mean it and maybe he's not alone. When he's having a bad day, he thinks that they can' possibly mean it and that it's a sop for their own egos; if push came to shove he is pretty sure that no-one would come to help him. This balance is shifting somewhat because people do try in camp, beyond what they do in canon because apparently everyone in canon are a bunch of assholes. So the repeated efforts by everyone has been shifting the balance for him. He does start to believe it a little, but mostly he's just good at fronting on his good days. Bad days he does not give any fucks.

What's Victor's daily routine?