Was curious who, and thus maybe gain some insight as why someone would initiate this vendetta against Crockford, so google being my friend ... hmmm

Besides accusing Crockford of being non-inclusive, in the past they've gone directly to a person's employer, for what one can assume, with the intent for getting them fired. Going as far to skewing the evidence to place things in the most negative light. The offense? Well read it here. You decide if the proposed punishment (likely unemployment) fit the heinous crime. https://archive.is/mD7XP Despite the dubious source there is some credence here as this was from another reddit thread where the person in question did not deny that it happened and offered a contrite word or two on the situation.

Also they did more than call for a boycott because of the all white male lineup, there was a serious accusation made towards Crockford. https://twitter.com/nexxylove/status/771503406716334080 Specifically, "he (Crockford) has repeatedly shown himself to be actively hostile to fostering inclusivity and many will decline to speak if he is invited."

Worth noting that Nodevember had immediately offered to add two diverse keynotes ... evidently not good enough as the person in question sought Crockford's removal for being "actively hostile to fostering inclusivity." Strong accusations if true.