"My point being that there is a likelihood that undetectable cyber attacks are under way, that the attacks and retaliations are ongoing and might eventually, maybe, some day, be revealed."
I've never thought for a moment they weren't ongoing.
I'm not sure of your point. Are you saying Americans have a Pollyanna purview?
Those articles only mentioned Russia, Ukraine and the US because they were about cyber and Putin's latest war. All big countries would be into cyber criminality/warfare. Israel is one infamous actor
"Russia is a bad actor, for sure, not trying to give them any cover, but it strikes me as a little naive to believe other countries, including America, aren't going the cyber war route full tilt, too."