Ok yeah, I just saw someone else play this route, I did every single choice equal to them and the scene still doesn't trigger for me like it did for them.
At this point I'm just giving up on Dozer's route, cause it feels like similar to how completing Chester's route affects it, completing Spencer's does to. That is legitimately the only thing different between how I played the first time and every subsequent one, the fact that I reached Spencer's ending. So I just give up on this, because clearly it's just impossible to get the best ending with Dozer for me.