In an uprising the government is going to try to level lots of accusations. Some will stick, some will not. In this case the government has a touch more ammunition on the anti-Western front, but this is entirely overwhelmed by the boon of protecting the leaders and organizers, who are at greatest risk using the social media needed to coordinate the uprising, and are the most essential to a successful outcome. The benefits of providing anonymity clearly outweigh the tangential costs of giving a bit more mud to the government to sling.