Re: I find the argument bizarre
"because if we allow that, we have essentially abolished the law and we'll just have those in power making judgements based on their personal sense of justice and we'll have a system that's wide open for abuse."
You've literally just described the miscreants here. They used their access to Google systems to creepily spy on their coworkers, all in service of enforcing ideological conformity to their ideology. But it's OK to them, because their personal sense of justice is better than those they were spying on.