Yeah, but you still have a 99.999…% chance of not getting your dick amputated on any given day as a Brazilian.
It’s still a minuscule chance of getting your dick amputated due to penile cancer. Penile cancer itself is extremely rare. Less than 0.01% chance.
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.