In reply to Central Geek.

Actually, no, “Plugin Directory Representatives” do not have the obligation to inform users regarding issues like this.
I gave it a second thought and must say you're right. Plugin developers instead of Plugin Directory Representatives should inform the public. And a notification on the official blog on wp.org can cause a quarrel between involved parties. But these are, as you have also mentioned, free available plugins so also developer has no real obligation towards the user.