There is a difference between liking the actor, and the character they play. i.e. Really liked Spencer Tracy, but not either Dr. Jeckle or Mr. Hyde. Thought Lon Chaney a wonderful actor, but definitely did not like Frankenstein, or any of the other monsters he was so good at portraying. Really loved John Wayne, but he was not the greatest of actors, still enjoyed every single movie he was in.
The character of Jack Deveraux has been badly treated down the years by several different writers, and with different actors playing the part. (Matt Ashford was the 3rd Jack).
Yep, we all like or dislike characters/actors.....as The Writer noted, despite the horrible, nasty, evil things EJ did, he still has his worshippers, and not a single person in Salem has ever said to Sami, how could you possibly want him back alive after all he did to you and your family. And same goes for the viewers, who just brush it all aside, love EJ!
I do not know how they plan to explain what happened to Jack, but it is true no family member ID'd him. Now Jack could have survived the crash (as I read recently how an elevator with 6 people aboard survived plunge and crash in a skyscraper. ). That body thought to be his could have been some poor soul already dead perhaps, or the elevator hit him. And that person was cremated, so there is no chance of rechecking.