This is 100% about controlling a message. You don't tell people to remove all existing content from YouTube if you only care about drones flying around.
What is the basis of demanding the channels be removed? Copyright infringement? Has The Developer tried complaining to YouTube?
Maybe The Developer will go after
Skip Smith next for saying things they don't like.
I hope a GoFundMe is set up for legal expenses and the parties involved can counter sue for legal costs & damages. Maybe everyone who contributes to GoFundMe could get a piece of the settlement.