There are plenty of "alternatives" that are not censored. There's media all over the middle east and asia that's not friendly to the US that isn't censored. It makes perfect sense to censor the aggressor in a war because of course they're only going to say things that benefit themselves, especially in a country that's passed laws against the criticism of the war.

All you're really arguing for here is that the west should openly allow Russian propaganda to infiltrate minds of the general public.