Anyone sensible doesn't call this censorship. It might sound complicated if you live in a country where elections are won by who spends most money for airtime, but granting candidates equal airtime on traditional media is how it works if you want to hold normal elections. Since that can't work on algorithmic platforms where everyone sees different content, you just block their reach to avoid anyone gaming it.

Normal countries also have media silence for the day or two before the votes.

Restricting the reach of politicians is an absolute good.