On one hand, this is a classic dictatorship move. Senegal just did the same just after postponing elections. On the other hand, Pakistan really did have terrorist attacks just before the election, targeted at the election. So taking heavy handed steps to protect the election integrity can be explained.
As an idea, media moratoriums immediately prior to elections seems fairly sensible. AI and disinformation attacks are likely to be 'last minute'. Maybe the entire phone and Internet system is going a bit far. Also, obtaining broad consensus for just muting the main social media channels doesn't seem that unreasonable. My thought is, unless gunmen are showing up at polling stations, what exactly is so urgent to discus…
If they got blasted with misinformation 24/7 before election day, how much will those 24 hours help them make an informed opinion? It might stop last minute attempts at swaying the election. But it will not stop long running campaigns.