Considering Mobydock hasn't gotten a letter from Apple (or at least said so) the conspiracy people are showing their true biases if they think Stardock had something to do with it.
Apple sends us letters quite regularly, btw, But we take a different view (since we have lawyers). We respond with requests for them to precise, written examples of what they object to so that we can
modify our software or website or whatever.
In the case of a dock, Apple, IMO, would need to be very explicit as to what they object to. I have read through on many occasions Apple's patent on their dock (or bookshelf). The docks don't include any copyrighted images. Icon zoomers? DesktopX had them long ago and before DesktopX VDE had things like that and before that other programs. Taskbar and launcher? The Windows Start bar.
In fact, look at this screenshot:
https://www.stardock.com/products/od20/od20-3.gif
Look at the BOTTOM of it. This is Object Desktop, released in 1995. While it's not the dock, you can see the general concept even then. Tasks and program launching. Put in zoomers and you have ObjectDock/yZDock/Mobydock.