Really nothing wrong with what he said, but definitely scary. The thing is, if we lose a player like Lukaku because of his perception that the club's ambition is not great enough, it doesn't bode well for our ability to draw other top-tier strikers.
Additionally, those complaining that being concerned about his departure is putting one man in front of the rest of the team are forgetting that our attackers and midfield have more or less been built around Lukaku's strengths. We don't have wingers, attacking mids or dcms who are adept at scoring. We have a bunch of midfielders who like to play passes into space which Lukaku maneuvers into, or to whip crosses or cutbacks into the center of the box where Lukaku is literally the only one ever waiting for them. The scary part about losing him is not that one man is bigger than the team, but that we rely on a certain mold of striker so much for goals that we need at least three attackers with different styles of play to compensate for the structure of our squad if we lose him. It'd be nice to have the type of squad where goals can come from any player like an Arsenal or redshite, but that's not our squad.