Screw the "media", especially where science is concerned. I only accept peer-reviewed research and my own knowledge of physics. Several papers have been published documenting observational data and mathematical modeling of Coronal Prominence Cavities. Based on scientific observations and known plasma physics, there is no doubt that Coronal Prominence Cavities are real and fairly well understood.Accepting that as the general suggestion of all minds is not going to make any of you brighter or smarter. Only because there are idiots in the Universe it does not make the rest of us Solar Scientists. Still there is a mistery to be solved. Accepting whatever the media says is the way to stupidity. But if you want to play that role, it's your choice. I'm still interested in the phenomena, whatever it is, and it's far from solved.
Here are a few examples of peer-reviewed research related to coronal prominence cavities.
Are you aware of any peer-reviewed research disputing the existence of coronal prominence cavities?
How well developed is your ability to visualize and think in 3 dimensions?