Though I suppose now that I think of it, it's possible the main mirror assembly actually has no built in roll control but only pitch, since the yaw part could be done by moving the entire telescope while remaining shaded. I've never seen any videos showing the full movement, but the previews for LUVIOR show it having full 3 degree articulation relative to the heatsink segment, so I assumed the Webb also has it given that they're extremely similar designs.
It's in an orbit around L2, so it's not statically positioned in space. L2 also moves with the earth around the Sun, so it's not statically limited to any one region of the sky.
Hubble shows four spikes because it has two struts.
https://bigthink.com/starts-with-a-bang/james-webb-spikes/
https://www.universetoday.com/155062/wondering-about-the-6-r...
The article is very informative, but my read of it is different: the three major "spikes" are in fact due to the hexagonal shape of the mirrors and how they're laid out. The struts also add three spikes, but: two of them coincide with the mirror spikes, while one of them (from the vertical strut) is visible on its own, and causes the smaller perfectly horizontal spike.
The image I'm basing this on is in your article with a caption starting from "The point spread function for the James Webb Space Telescope" [1]
[1]: https://bigthink.com/wp-content/uploads/2022/03/FOFC8ZPX0AIB...
The images take on a more synthetic and fake quality when the technical physical man-made constraints of our telescope get projected out onto the natural very much NON-man-made universe.
Look at https://stsci-opo.org/STScI-01G7ETPF7DVBJAC42JR5N6EQRH.png and observe the incredible entropy in the nebula itself. The consistent, perfect, straight lines, of each star are jarring in the image.
but we should edit them :)