Yeah, really seems like a sign of something to come.
The ring at 0:08 look very weird, unlike others, seems to be too smooth as if AI-generated. This is Associated Press channel though, so unlikely to be a fake or tampered video.
Another video on Reuters channel:
Rare volcanic vortex rings puff out of Mount Etna
https://www.youtube.com/watch?v=pQ7WyXyXbiM
UPD
Rare smoke rings rise from Italy's Mount Etna | AFP
Impressive sight. Some people may begin reporting UFO's in the area, not knowing what they are seeing.
Definitely fake
Article from 2019:
Volcanoes blow smoke rings. Now we know how they do it.
https://www.nationalgeographic.com/science/article/volcanoes-blow-smoke-rings-now-we-know-how
Those rings are the smoke that u/ActuallyNot blows up people’s asses around here. It’s Saiditors releasing the smoke.
In-the-clouds |6 pointswritten 26 days ago ago
SOS - Send help! Perhaps the mountain is sending a signal to the people to prepare now.