Clearly Valve couldn't be trusted from the beginning because we knew what type of people worked there. Mass double standards were bound to happen. The best thing we can do is make a large list of all these double standards with images and archives as proof. Even better if you include the names of the people who did it in the emails. Even if they didn't do it, they would quickly put the blame on the real suspect to avoid trouble.
Someone just needs to go out of their way to do it. I may just make a thread to do so.