You couldn't really warn future civilizations about the dangers of a true Artificial General Intelligence - because there probably wouldn't be any future civilizations.
And even that assumes the problem magically solves itself once humans disappear, which it wouldn't. A real AGI would be perfectly capable of continuing to exist without us around.
Starlink doesn't work in Russia or in Russian-occupied territories in Ukraine. It does, however, work near the front lines - exactly where Ukrainians need it most. That's why Russia has been able to use those terminals there, as well as on drones flying behind Ukrainian lines.
What changed now is that it got disabled across all of Ukraine - but Ukrainians are whitelisted and can register their terminals to get them working again. Russians can't. They also disabled Starlink for anything moving faster than 70 km/h, since Shahed drones can't fly that slow.
You're probably refering to this incident: Did Elon Musk Turn Off Starlink Access in Crimea To Disrupt Ukrainian Attack?
No, he didn't turn it off - it was never enabled in the first place so that Russians can't use it.