Reddit has something like 3m active accounts and 150m unique visitors in a typical month. The Blackout2015 sub has 37k subscribers. Make no mistake: this and the fatpeoplehate protest are an absolute drop in the bucket in terms of Reddit's overall user base. It's only notable for how easy it is for a relatively small group to completely control the narrative on /r/all.

These people are trying to organize a blackout for July 10th-12th. I hope they do. You know what will happen? Reddit will return to normal. For two days no one will talk about Pao or Victoria and they'll realize literally no one cares about their protest.