When people say that Russian and Chinese state media are propaganda, it is not always because they are racists. Many people say this because they make a distinction between a government and the people, and understand the difference democracy makes.
It's great that you're trying to emphasize with people in other countries. Empathize deeper and think through how it must be like to live in such a political environment to their full conclusions.
You are engaging in the logical fallacy and propaganda tactic called whataboutism.* If people genuinely care about diversity and challenging bias, they wouldn't uncritically view an unelected president (or an elected president chosen in a country without free elections) as the spokesperson for their ethnic group.
You are engaging in the logical fallacy of making a true statement about fascist dictatorships which is skewed to, by implicit comparison, imply that the thing in question is the case elsewhere (elsewhere here being liberal democracies because that’s the most common comparison and also where most people in these discussions live). Media in liberal democracies do not reflect the diversity of their people, no.
[1] https://www.youtube.com/watch?v=R6VCzhWy-Kk
[2] How do I know? Because it’s the only reply you get 90% of the time when replying to these kinds of statements.
Who has claimed all Russians are part of a large propaganda network. This is about a government news network.
Most discussions are of the war in Ukraine which also connects to US politics. It's going to be negative and treated extremely suspect because Putin is ex KGB, lied that he wouldn't invade, the war itself, and their influence in US elections.
This is about the Russian government though. If your argument is that it's wrong in these constraints then I disagree but your generalization is valid. My original comment was about Russia as a whole but I think I wrong to try to shift to that as it doesn't come up