Although I don't think he would have stopped his daughter from marrying Aragorn. And there was a Thingolish challlenge to Aragorn....he supported Arwen in her choice
Perhaps Elros Halfelven strongly considered that the tales of the Elves might contain the escape from Deathlessness.
'Fairy-stories are made by men not by fairies. The Human-stories of the elves are doubtless full of the Escape from Deathlessness.' JRRT, On Fairy-Stories
Luthien escaped so, it might be said. Depends upon one's point of view here.