The Black Hat Conference this year pulled a talk given by Crown Sterling because it was, in the opinion of the people in attendance and security researchers, absolute psuedoscientific trash.

https://www.vice.com/en_us/article/8xw9kp/black-hat-talk-abo...

Don't let anyone convince you hackers are anti-deplatforming. They merely disagree on what behaviors or speech are worthy of having a platform.