It is happening again. Revelations about Facebook’s business practices — including recent whistleblower allegations that it turns a blind eye to hateful content and misinformation to maximize profits — are roiling one of the world’s most powerful tech companies. In an additional twist, a deluge of negative headlines on Monday was complemented by hours of outages across Facebook’s platforms and services, which engineers in a blog post attributed to “a faulty configuration change” on the bedrock routers that power its business.