> This is [...] using the same naming scheme.

That's because it's based on genuine 2006 MUI4 source code.

> MUI 4.0 is a core piece of MorphOS.

MUI 4.0 hasn't been a piece of MorphOS for years. Current version is 5, and before it was 4.2.

> If Zune ends up with a clean room implementation of MUI4 and keeps calling
> it Zune, there is no issue. That's not what happened here.

Indeed, what happened here is no clean room implementation but a development based on genuine 2006 MUI4 source code.

> We all know what happened here.

Yes, since Henes did us the favour to tell us two months ago (link in comment #129).