Ethical assessment depends on the reasons you have for doing something. Comparing the reasons: The Kreml cut off the nation from state-independent media to deceive the people about what happens and spread misinformation that is uncontested. The west cut out Russian media channels because they are trying to spread misinformation and stir up chaos and confusion.
What the Kreml does is a blatant act of manipulation and lying to people. That’s morally highly objectionable. What the west does is trying to stop the spread of misinformation, which is generally a morally good thing.
So, yeah it’s morally correct under any standard you could apply unless it’s a very strange and fringe standard that nobody in their right minds agrees to.