No, it’s censorship if your communication is suppressed
LOL publishers not wanting to publish your work is not "censorship". You clearly have no idea what "censorship" means. Try talking to writers from Russia or North Korea.
It's a financial decision, that's all. Publishers make business decisions based on what's profitable.
Public figures who acts badly in public make themselves less profitable (with certain exceptions) because audiences don't want to give their money to them. Zillions of actors and other public figures have created scandals due to things they have said or done and faced the consequences, which is that movie studios, TV networks, and publishers don't want to invest money on people who piss off and alienate their audience. Because if you alienate your audience YOU LOSE MONEY. This is not rocket science. Why are people struggling to understand this very basic fact?
People no longer want to buy Kate Clanchy's book because they don't want to give money to an abusive liar. The publisher has to be seen to do something in response to the scandal Kate created, in an attempt to ameliorate the financial fallout of the scandal. It happens all the time.