Yes, that's good advice. Be careful not to act on behalf of adversarial governments.
Someone being charged with a crime is a completely different thing to someone "being labeled" and trying to downplay the severity of the former to try and extend it to this hypothetical is telling.
To uphold liberal democratic values is to support the free speech that makes these attacks possible. The old 20th century style of propaganda was mostly ineffectual. The modern tactic of flooding public discourse with bullshit is much more effective. At some point people concede that maybe the shills and useful idiots working for the dictators do raise some valid points, so who knows what to believe.