On a serious note, Pochettino has a loser mentality. He is one of the few actually good manager that goes around and complains about expectations being too high, claiming that trophies are for egos or being upset that his team is expected to win every game when he is managing a team that is the best in the league. On the latter people will make excuses for it but all big clubs expectation is to win every game they start, it's unlikely to happen but they treat every loss as a setback. Pochettino will try to water down any sort of ambition.
And the quotes a week ago from Postecoglou were interesting in that context because the issue that he had with some people within the club wouldn't have been an issue for Pochettino.