They are bullying and harassing people, and trying to lump that in with "criticism". To make it worse, when they get called out on it, the left goes to victim blaming. It is just gross, like when people point out what a girl was wearing in a sexual assault case.
You can criticize, you can ignore and you can boycott. Instead too many people (look at the response to JK Rowling) are threatening death and rape. Or are harassing employers until they capitulate.