If you strip away the banter, the interesting part is how naturally he framed Eze as having made the right call. That kind of public endorsement matters, because it shows the player is valued and the move is being sold as a positive step rather than a controversy.
The funniest part is that the quote works on two levels. It flatters Arsenal and Eze, but it also gives everyone else a little hook to run with. That is why it spread so quickly, because it is neat, pointed, and easy to turn into banter.