and normally they don’t interact
But dark energy and dark matter make up 95% of our universe. So they would be the “normal”.
If anything, the 5% that we do know would be the “abnormal”.
And anyway, it’s only called dark energy and dark matter, not because it doesn’t have a cause, but because it doesn’t interact with light (photons don’t interact with it).
Although I think you are right that they don’t know what causes it. It does interact with gravity, though.
But all this is way beyond my tiny brain.
You forgot the second part, which really justifies his fears. The whole quote:
And apparently, the stings and the smell are like markers for other wasps to attack (according to an expert in the article).