Why is it so taboo to talk about people leaving, quitting, or even dealing with their own battles? Shouldn't we keep people in the loop with common sense disclosures? You don't have to say much and it makes people understand the situation and take on the responsibilities.
So while it's hearing nothing, an irish exit, or even greener pastures, I do believe it's up to someone to communicate it in a common sense way so people aren't surprised months down the line.