The Man
Unbanned zombie poster
I don't think so. Dark just means dark. Look at how much speculation abounds on the subject. I read about a year ago that a couple of cosmologists have speculated that CDM is a special form of hydrogen (of all things)! But to be clear, I'm skeptical that dark matter is entirely hydrino.
As already explained to you your thinking would be incorrect. "DarK" in reference to dark matter specifically means no or very limited interaction with the electromagnetic force. Forming diatomic molecules or compounds, the bound state of negative electrons to a positive nucleus, emission, absorption and scattering of electromagnetic radiation are all significant interactions with the electromagnetic force. Now if you want to assert, as it seems from your assertion above, that such dark matter (non or weakly electromagnetically interacting matter) doesn't actually exist, that would still mean that hydrinos can't be dark matter.