No one got off the plane at that point. It was the woman who jumped out of the seat and rushed to get off the plane super fast, then people around were like what was her issue? Part of it was in her haste to move to the other exit row she left her seat reclined (which pushed back into the passenger behind her) and the tablet holder out (which must be stowed during take off, landing and taxiing). The passenger behind her actually reached around just after she left to push the seat up. Had I noticed she had reclined it I would have done that. It was enough that about 7 or 8 passengers in multiple rows took notice of her erratic behavior and tablet issue (it made a lot of noise every time it fell).
I would say it was a safety issue because a condition of being in the exit row is verbal confirmation of your willingness to help as well, of which the FAs did not get nor were there a discussion about how to pull down the door, when to do it, etc. When the FA sat next to me prior to the jet bridge door being closed no one was sitting there so it became my responsibility until this errant passenger took it upon herself to sit there. She moved to the seat next to me after we were already in the air. PLAY is an Icelandic airline so I'm not sure if there is a requirement to speak English but domestically this is also something that is required for the airlines to verbally get confirmation of. That was actually a big issue on our flight last year to Puerto Rico where majority of the plane was ineligible to sit in the exit row.
Now PLAY airlines FAs did not seem to really be ones I would actually trust in the event of an air crisis but they were super strict about the exit row themselves. You could not have even your jacket off such as the woman across the aisle from us. She was told to put it back on. Nothing under the seat in front of you nor could you have anything in the seat pocket that would push it out far to obstruct it. If this wasn't an exit row it would change the conversation to a lesser but still interesting character of a passenger.
However, by your comment on another thread I question whether you are being genuine here.
I too am interested in getting off the plane but you know this thread was about passengers and flying so take that for what you will. Yes we found out PLAY Airlines attracts a certain type of crowd though it was enough to garner attention from others around so I think that counts for something