I don’t see that quote in the article at all, and it doesn’t appear that the author claims any kind of trickery or sneakiness to trick his team into using Racket. It seems like the team built the tool together.
(In case future readers are confused, the original HN title had odd nested double-quotes, and the innermost quoted part was something like "how I tricked my employer into using Racket". Which seemed like terrible PR, giving the impression that this is something for irresponsible fringe fanatics.)