> Wrong on at least 3 counts.
Liam, you need to stop hanging around on the Orange Site so much.
On point 1, since IGnatius T Foobar ! referred to 'Mac', I'm counting from Mac OS X Beta only, not (NeXT|OPEN)STEP, which while a direct ancestor of the Mac OS X|OS X|macOS dock, and having used NeXTSTEP in anger, it's not quite the same app (for others, yes, it's an app, see /System/Library/CoreServices/Dock.app). Since you're clearly wearing your OS name pedant hat, it's NeXTSTEP, not "NeXTstep".
On point 2, OK, so it's a fork of a plugin that was originally designed to replicate the ([Mm]ac)? ?OS X? dock. FFS.
On point 3, never mentioned or intimated anything about the positioning of the dock. Liam, you're not "quibbling", you're clutching at straws.
I'll half concede to you on point 2, but the rest is just without merit, especially for you.