You're taking my statement out of context. I was refuting the claim that China's restrictive social media policy is a justification for a similar US policy.
If the UK justified their actions solely on the basis that because the Germans did it it must be ok that'd be unreasonable. (This isn't the right forum to get into it, but the ethics of civilian saturation bombings are much more complicated and I'm not saying either was in the right, though of course in total Germany was far far worse).