B) Everybody who claims that "we" (meaning any Western country opposing the Russian invasion) are actually "at war" - where "war" is a word with objective meaning and not just tough talk. Where that meaning implies legal consequences which in effect limit civil liberties and expand government's power. Are those posters really thinking that their civil liberties are, in principle, in question - now?
No, it isn't and that's possibly where your confusion comes from.
Maybe it's my age, and the fact that I was born on the other side of the Iron Curtain, but growing up in the Cold War (notice the word 'war' in that phrase) helped me understand that conflict is a continuum rather than a binary condition.
The West was not in a state of war with the Comintern, but damned if we didn't execute their spies. The Rosenbergs were sent to the chair in the 1950s, for example.
I'd consider wilful propagation of a foreign government's propaganda, intended to undermine my country's security and democratic system, as seditious or treasonous, as others have suggested. There are many exceptions to free speech, ranging from commercial fraud to others, and I'd include distributing lies for the goal of long term elimination of the constitutional right to free speech to be one of them.
We had a good run for a couple of decades, where we let things get slack, and now we're paying the price. A democracy is not only built on having free speech, but on defending its long term viability. The opposition's goals to undermine democracy are in and of themselves a threat to these constitutional freedoms and need to be handled accordingly.
It's sort of like those people who defend commercial fraud as 'free speech' because they have a black and white, short term, simplistic view. Having seen what it's like to try to operate an honest business in a very deregulated environment in the early post-Soviet breakup, it's precisely this experience that leads me to appreciate the danger in binary thinking about conflicts with intermediate conditions. It's the intermediate conditions that provide plausible deniability and give time for enemies to accumulate resources beyond tipping points, at which time it will be too late.
And Skeptics are almost certainly aware of the moral hierarchy. "But is it Legal?" is not the final word on what is morally right. It is, in fact, considered a lower and more juvenile level of morality. The Holocaust was 100% legal. And that was very influenced by the American segregation and anti miscegenation laws, which were perfectly legal. But both were morally wrong. We're in the same situation with foreign interference propaganda unfortunately.
Western politicians may be dragging their feet on managing foreign interference because they're receiving truckloads of donations from the social media platforms and Russian billionaires, but the public opinion has been shifting, and my hope is that they will update our protection sooner rather than later.