"Simply put, the actual process of requesting the take down and proving violation would have severe implication on Wenzheng Tang, so I have hesitated in the hopes he would simply choose to take it down himself."

"So, both repositories remain up, for now, not because we are powerless to take it down... it is that the process of exercising this power could very literally ruin the actual life of another person."

"How many people actually moved?" .. I'd presume everyone who wants to be in that channel and who has noticed that it has moved. Why would they not?

Also note that this example seems to be the exception, many channels that got hijacked merely mentioned the move in topic or even just mentioned libera in topic without any decision to move being finalized (though the hijackings did a great job at finalizing those decisions ;)