I've usually been somewhat indifferent towards Keefe. This is a bit odd though to say the least, and I quite like Jarnkrok.
Jarnkrok biggest value add is more defensively than a guy whose going to help you claw a game back offensively
It looks a bit easier to understand if you break it down.
Both Bert and Domi took penalties, which cut into their ES time, and neither plays PP or PK.
Fourth at even strength behind the top line, and quite possibly more likely to score at ES than JT or Mitch. One of the main PK guys, and almost three minutes there.
I'm not sure why so much PP time - maybe Keefe thinks we need someone there who speaks Swedish? You're basically trying to replace the QB, so Jarnkrok I guess makes more sense than Bert or Domi (Bert was more effective than JT as the net front presence, but Keefe for some reason wants JT there).
Bottom line, though - if you try to make sense of Keefe's decisions, you'll hurt yourself.