It seems only that the recency of their interaction has got RW feeling burned. Also, its not like this is going to hurt his (RW) business anyways. People who love RW likely loathe J. Crew for the same reasons. People who love J. Crew likely have never heard of RW anyways.
Someone who's prepared to spend north of $1K for a RW piece isn't going to be swayed last minute by J. Crews' accessible price point.