One of the things Iran's unambiguously guilty of is these same kinds of access restrictions. If you've ever wondered why Google's sanctions-related controversy was focused on Google Cloud, it's because that was the biggest Google service allowed at the time - search, Gmail, and Youtube had already been banned by the Iranian government.

So while I share the skepticism expressed upthread that blocking websites is effective diplomacy, it's hard for me to look at the situation and see a one-sided problem.