The link didn't work for me. I'll have to look on FB and see if I can find it.
Yeah, in most of the HEMA circles, it's becoming pretty well accepted that the Poleaxe requires extra special care, since it's hard to make a "safe" version of it. If it looks like a poleaxe, it's a poleaxe. If the head is made of rubber, it only helps a little, and otherwise it still hits like a full blown poleaxe. The potential of going through the eye slots with a capped steel spike just makes it worse.
At WMAW a year and a half ago, Sean Hayes broke a finger doing poleaxe in the armored deed, with rubber-headed simulators. He took a blow to his hand, and despite his hourglass gauntlets, the impact still broke a finger even though it looked like there wasn't much energy involved at the time. That's relatively minor in comparison, but it illustrates just how dangerous it can be, even with rubber heads.