If failing to preemptively blacklist ideologically unacceptable attendees carries with it this degree of negative response, then a preemptive Hollywood-style industry blacklist is exactly what we'll get.
It's already the case that defending someone like Moldbug carries with it the risk of being branded as supporting the popular perception of his views, which in turn means you too can be on the receiving end of mob wisdom.
Like this?
https://twitter.com/justkelly_ok/status/713222987537756163
"In case you think it's just LambdaConf: Google continues to employ one of Moldbug's most devoted followers."
"Tech employees: it's time to hold your execs accountable for lack of action. My tweets aren't gonna do it alone."
There's a lot of hypothetical rabbit holes to go down with this, but ultimately this is a distraction from what's being discussed, which is a person choosing to withdraw their workshop group from a conference because of the opinions of a speaker. Boycotting, protests, or simply declining to not participate are fundamental methods of democratic action. It's laughable to me that anyone would equate what's being talked about here with a suppressive measure.
I won't even discuss this subject non-anonymously due to the risk of the mob setting on me by association, not because I agree with Yarvin, but because I disagree strenuously with their use of intimidation to suppress people with whom they disagree.
Attempting to paint this as anything other than intimidation and suppression strikes me as a great irony as I sit here responding, necessarily for the well-being of myself and my family, anonymously.
USSR:
"[We call for] painless but full liquidation of the monasteries, as chief centers of the influence of the churchmen, as nurseries of parasitism, as powerful screws in the exploiting machine of the old ruling classes."
USA:
"We will not knowingly employ a Communist ... In pursuing this policy, we are not going to be swayed by hysteria or intimidation from any source. We are frank to recognize that such a policy involves danger and risks. There is the danger of hurting innocent people. There is the risk of creating an atmosphere of fear. Creative work at its best cannot be carried on in an atmosphere of fear. We will guard against this danger, this risk, this fear."
"... We request Congress to enact legislation to assist American industry to rid itself of subversive, disloyal elements."
China:
"Although the bourgeoisie has been overthrown, it is still trying to use the old ideas, culture, customs, and habits of the exploiting classes to corrupt the masses, capture their minds, and stage a comeback."
"[Our] objective is to struggle against and crush those persons in authority who are taking the capitalist road, to criticize and repudiate the reactionary bourgeois academic “authorities” and the ideology of the bourgeoisie and all other exploiting classes"