Good link. I guess it was just lazy journalism propagating the myth.
I wouldn't say it was a myth. The model number isn't on the computer and wasn't in the sales and marketing. If you never looked at the box then you wouldn't know (unless you looked in the repair manual)
https://archive.org/details/Amiga_Computer_Model_1000_Assembly_Level_Repair_1985_CommodoreEven the 1050 manual just refers to it as "the Amiga", again the model number for the memory expansion is only on the box.
It's likely they didn't want you to think there would ever be another model or nobody would buy one.
The problem was that most people didn't own one as they were so expensive and so they never saw the box.
It seems to officially be an "Amiga model 1000".
Commodore weren't consistent with naming though, coming out with the Amiga 4000 and the Amiga A1200 at the same time. For some reason only the A500/A600/A1200 officially got an "A" on the front label and box, the big box amigas didn't seem to. The 2000/3000 & 4000 got the A as part of the model only on the rear label, but of course the Amiga 2000 variations (2500/1500 etc) all say they are model A2000. The 2000 is unique in that it has the same model number for machines based on three different chipsets (the dip agnus, the fat agnus and the ecs agnus/hires denise).
tl;dr commodore suck at numbering machines.
PlayStation, GameCube etc have model numbers too.
