Quote Originally Posted by EaraGrace View Post
I believe it’s explicitly said that none else fled because they thought it cowardice, though I’ll look and see if I can grab the quote. And yeah those post finale quest lines were nice, sad but nice
Ah, yeah, I double-checked, and it's more like a mix of both: Midgardsormr was the only one who fled before the Omicrons invaded in full. After he left, there were some who wanted to follow:

Sehth Toskh: However, some few did wish to follow him. Midgardsormr was wiser and more formidable than most -- this, they believed. They knew he would forge a better fate than awaited us here...

Sehth Toskh: Would that they had not been halted by the ferocity of the machines' onslaught, in the end.
(Sidequest "Left Alive")

And after the Omicrons abandoned the Dragonstar (or at least once the fighting wound down), more attempted to leave:

Estinien: But there are dragons among you capable of journeying to other stars.

Bereaved Dragon: That there are. Many would make the attempt, each bearing a clutch of eggs.

Bereaved Dragon: The richest stars were home to the harshest rulers, and the arrival of dragons incited contests for supremacy.

Bereaved Dragon: When the fires faded, the wars lost and won, they too were reduced to ash and waste.
(MSQ "A Test of Will")

So from what the dragons knew, none of the dragons who left the Dragonstar survived, whether in the attempt to flee or when they found other worlds. However, this also apparently included Midgardsormr to their knowledge, and we had to prove that not all the dragons who fled died out. At least one of the dragons also thought "yes, Midgardsormr found a home on another star, but there was war between dragons and others anyway, so it's only a matter of time", which is rather pessimistic (if understandably so), but does imply that what the dragons tell us is true and inevitable might not actually be the case at the moment.