Basically the title.
Because ever since Mordremoth times, we've known that the sylvari can't be Risen or Branded because they already were Modremoth's minions and Elder Dragons can't or don't just steal each other's minions. But in Icebrood Saga, sylvari can hear Jormag's influential whispers the same way any other race can. Why is that possible? Is it because of a lore part I missed (specifically a find that once an ED is dead, any other ED can just clam its minions?) or because now Jormag has a portion of Mordremoth's magic and therefore has an access to the minds of sylvari?
I just find it a bit strange that there are no other sylvari-as-dragon-minions except for Mordrem, but the sylvari, especially the Commander, can still hear Jormag's whispers.