I haven't been on Reddit during the blackout to maximise the impact, but it appears non-blacked out Reddit subs are being used to discuss and coordinate the blackout? I guess next steps are to go live and engage and decide whether to go further.
Louis Rossman posted a YouTube video supporting the reason behind the blackout but critical of the 2 day planned duration - suggesting it would be interpreted as having no determination as people couldn't stand to be away longer. It would potentially have been more difficult to get everyone on board if it were initially planned as 'everyone leave and don't come back until this changes, or never come back if it doesn't change'.