https://www.reddit.com/r/CuratedTumblr/comments/1cbkstf/may_the_terf_wizards_die_unmourned/
I argued here that the whole HP shit was worth it because it was going to imprint in the consciousness and brew beneath the surface. Libs see it as tainted and that shit isn't going away. There are real moral concerns bothering them deep down.
The long term effect is good.
It's the same issue that Star Wars has with the Skywalkers. They wanted to tie FB into the Potter storyline, and soon enough it was Dumbledore's story and the more grounded shit that people related to was put aside