It's not a backchannel... every social media company has a dedicated response team that handles requests from law enforcement, partners, big media companies, etc. Do you think Disney just hits the report button on YouTube? This is an official method of reporting content. Literally every major company does this and the reasons why have been explained for years.
>>wahnfr+y4
IDK if you understand what back channel means... This was an official of communication for the FBI. Back channel would be using personal devices and emails.