refraining from encouraging IP’s directly benefitting her could distract her or even send a message to her potential allies.

I also think that isn’t worth it. You’re still letting some rich moron’s actions have too much sway over your mental health. What you’re describing is the most tiny of marginal gains. Her IPs are already dying in relevance. Your energy would be better spent telling people about how cool some other thing is rather than how bad HP is. If someone loves HP and it makes them happy, I see no benefit to raining on their parade.

I disagree with this take. Buying HP stuff won’t change anything. Not “it will change very little”. It will actually do nothing. If the whole world decided to stop buying anything that gave her money, it wouldn’t change her lifestyle at all. She already made enough money that she never has to consider it for her lifestyle. People might as well enjoy what they like and not have one more thing weighing on their mental health. Let people have their escapism.

Didn’t Hermione lead a campaign to liberate house elves but was laughed at by everyone until she dropped it?

Then Harry frees one elf and is considered a hero while the person trying to solve the systemic problems is a whiny bitch. She’s showing how she thinks about the world with that one.