Irrationalist:
Way to live up to your name. You read this, and your conclusion is that the author is poisoning the well? Amazing. 
It has nothing to do with -ist and -ism, or with labels. It has to do with poisoning the well of public discourse with anonymous trolling, hate, threats, abuse, and misogyny. 
The idea that being called an "-ist" is as bad as being doxed and getting death threats is an idea you can only possibly have because you're a privileged troll who poisons the well, and not a responsible citizen who drinks from it.