The ancient dam of Ma’rib breached more than once. There’s a recorded breach in South Arabian chronicles somewhere around 145 BCE and it wasn’t repaired for some time because of a major war and then there’s the other breach prior to the advent of Islam.Question regarding this. The breach of the Marib Dam happened in the 6th century CE. The TMRCA for T-Y44591 is 3000 ybp, about 1000BCE. Unless I'm misunderstanding how TMRCA means, doesn't that mean there's a 1600 year gap in your theory?
So it’s hard to say when the supposed migration of Y44591 to the Somali peninsula took place and if these migrants were Sabean or Minaean.