The title is "when employees misinterpret managers". Anybody who thinks that phrase implies it's anything but the manager's fault is either not a manager or is a bad manager.
Now: reading the article, that does indicate that it's the managers' fault, and it's a bang-up job of doing that. But the headline - oy!
Headline writing is hard.
I saw an old work training film about management with Jon Cleese as some sort of angel (god?). He keeps explaining over and over again to the manager that it's his responsibility for everything. It's at least the starting point for a manager to figure out what went wrong.