[1MachineElf]

>Given this, blocking social media by governments during elections is not so bad after all. Unlike other solutions that try to regulate it, the blocking is uniform across ideology and party.

Your intended effect wouldn't manifest unless this occurred for all forms of media. With social media blocked, political factions still have radio and television, and it's not a good situation when these are all tilted towards a particular side. The goal of internet access is that people have the choice and ability to view whichever party they wish. The problem comes from relying too much on specific social networks that are dominated by partisan voices. A better solution would be to even the playing field rather than ban entirely.