Earlier quoted context omitted.
This is a slippery slope fallacy. It turns out that in reality we are quite capable of allowing tech conferences to choose their presenters and to disallow presenters who have made uncomfortably racist comments without ending up at the point where it has a chilling effect on other types of speech.
I flatly deny that the process as described is capable of discernment. What happened was: speaker announced, lots of people complain, conference organiser withdraws invitation to avoid focus on "inclusion and/or presence." Note that the organiser explicitly excluded consideration of the merits of the complaints. Now compare my invocation elsewhere in this thread of the spectre of an anti-Zionist boycott: the complain…
None of this came from Yarvin, who is Jewish, and well worth defending, but get much beyond him into the movement and you'll be supporting anti-semitism, not tolerance.