It’s not simple gas, as I understand it. It’s a living being with a plasmoid anatomy. It may even be intelligent. It’s alive, with its own subjective experiences, memories, goals, evolution, etc. The claim here is not at all as prosaic as you make it sound.

Now, is that what all of UAP are? Personally, I don’t prefer overly physicalistic explanations for the phenomena. This sounds like an attempt at ‘taming the weird’, as it were. Still, it’s also an admission that our scientific establishment may have been blind to forms of life that were always with us but went unrecognized. It’s a baby step for them.