those aren't player slumps. The entire unit bad. It's not like those players are struggling offensively. The PP is just not operating properly.
Now, this conversation will go in a lot of directions, but i'll try to filter it down:
We have, at the very least, 3 hall of fame players on the PP (upwards of 5). We have some of the most offensively-gifted players of all time on the PP. We have the hardest working player of all time on the PP. It has struggled with Letang. It has struggled without. It's now struggling with EK.
Yes, players need to know better. These are all geniuses, they should be able to figure it out. However, every time a situation like this comes up, in any sport at any level, i'm always reminded of the fact that: even Michael Jordan needed coaches.
There is no legitimate excuse for the power play to be this bad and while i've never been on the fire Sully bandwagon, it quite obviously has to start there.
ANd if coaching doesn't fix it, I guess they're just a bunch of uncoachable losers