I think he has a point. In the last few years I only remember the release of Hogwarts Legacy which was related to Harry Potter. Never heard of a show, pop up events etc.
But the calls for boycott I see at least once a week here on Lemmy.
Maybe it would be better to just add that as comments to actual HP promo rather than giving it additional attention and relevance.
It's weird IMO to count in expected gains that never realized when calculating a deficit.