As said there was no requirement for Aegean to honour that connection at ATH. Therefore I find it a completely logical decision to not rebook onto another flight either.
Even if changing a Pass flight destination could, maybe, theoretically be possible … Frankly, why would they? Purchasing separate tickets means that the buyer assumes the risk of misconnecting.
What normally would/should have happened (following the rules) is for this pax to have been stranded at ATH, overnight at the airport or at a hotel at own expense, and book another flight last minute - also at own expense - at much higher cost. That’s the risk of travelling on separate tickets. IMHO Aegean has shown quite a lot of goodwill, and have gone far beyond what they were required to do - at their expense.
Therefore i’m surprised by the negativity, which I consider rather unwarranted. Also removed the profanity from the thread title for reasons that I hopefully don’t have to go into. Please keep things civilised.