And yet in his new role as a coach, in which role he plays a small part in P/C's preparation and is personally invested in their success, his past as a competitor doesn't matter and he has to say what he needs to say to motivate them and present a united front to the world. Gassing them up is the professional thing to do in this context.
Wayne Gretzky goes around saying every first overall NHL draft pick is more talented than he was at 18 and that he wouldn't score a single goal in today's league. Does he believe it? No idea, probably not--but also it doesn't matter because of course he's gonna say that in his present capacity as an ambassador for the game.
"See, V/M stans, even your god says P/C are better!!!" and "He's being forced to say this" are both beside the point in treating Scott Moir as P/C's rival rather than someone they now train under (however indirectly).