I'd expect it to meaningfully affect the sales and the maker/seller/whoever behind it. Being the most sold game of the year and presumably making a fat profit, I don't think it really did either.
So, the fact that it took all year on all 4 major platforms to outsell one game from a much smaller but recognized IP thats restricted to one platform doesnt sound like a meaningful effect on its sales to you?
Because thats a very weird thing. It should not have taken so long to reach this point, given the size of hp as a franchise.
That's the cheerful way to look at it. It sure could've, hypothetically, sold two gazillions instead of one. Take that, game, the boycott must've worked! Yeah...
I guess a single person boycotting it would be a detriment but when you're selling a boatload and making a hefty profit you aren't all that bothered by that one lost sale.