Aye Ian,
Thank you for the images, the first one appears to be sufficient to my uneducated eye. Minimal spot welds to retain the components on the body of the shock absorber. A notched pressing, with which to make any required adjustment. And, ............ nothing between the notched pressing and the top of the spring, as though a dished washer(s) have been left out and the spring can slide about, rubbing the shock body and maybe being unsupported on parts of it's circumference.
Maybe I'm seeing things that aren't actually amiss, BUT ......!
I'll leave the comparison between actual machines to you and Propellor.
Good health, Bill