Here's a couple of videos that might give you a better image of what I'm talking about
(view at 0.14 seconds). Compare this frame image to the image I included in the original post.
(view at 0.08 seconds, rocks are right between the two climbers)
Those secondary summit pinnacles/blocks on Mt. Shuksan (at the very top of the "summit pyramid") are what I refer to in my original post.
From what I remember they looked like the climbing out there was at least class 4 to low 5 to get on top of them. They didn't look like they had much room for more than one or two people on top at any one time. The traverse out there didn't look that "easy" either. To reiterate, the guidebooks I checked didn't make a specific distinction nor the summitpost page on Mt. Shuksan (Sulphide Glacier route).
Granted, I was in a snow cloud, but I'm still wondering if somebody who climbed Mt. Shuksan (in decent/clear weather) could confirm that those rocks out there are the same height, lower or possibly higher than Mt. Shuksan "summit" area (where there is room for a group people).