She deserved strong negative feedback on that issues. Given same she doubled down. If you believe trans rights are important then its perfectly logical for example to boycott her books/movies. Which is to say she deserved to be canceled. By which I mean people simply vote with their wallets not to give her any more money. This doesn't infringe on her rights to live her life as she chooses she will just have to do so with less of other people's money.

This is fundamentally a different question from should someone hate her or say hateful things to her. Anything that stirs up strong emotions and reaches millions will result in both reasonable dialogue and insane screeching. The people who reasonably disagree with her can't do anything about the nutjobs nor are they responsible for same.