Will this be another theory that predicts you won’t find any evidence for it?
Actually, this new theory is credible because there "is" experimental evidence for it (unlike the "dark matter" hypothesis). It explains the motion of stars better.
“Will this be another theory that predicts you won’t find any evidence for it?”
Exactly. There isnt enough regular matter in the universe to account for things so they theorize “dark matter”. They look for dark matter and cant find it. Now a new type of data data/substance is proposed that does what dark matter is supposed to do. There is no evidence for this either.
In biology this is called a “correction factor” to compensate for consistent errors you cant explain.