Noone ever said that it was impossible to write an SMP-OS with an API similar to AmigaOS running recompiled (and patched) SW.
You do realise that this description could easily be applied to MorphOS, especially when running native application software, right?
The text you marked as bold in your quote, is rather what is required in order to go from where MorphOS is today, to a future with more "modern" features. Today, the Amiga legacy and backwards compatibility prevents this, but as Kronos said, an Amiga-like OS with
similar (but not identical) API could of course be made at the expense of the legacy Amiga environment. Then things like 64-bit, SMP, true memory protection, the maximum memory barrier, etc could be dealt with. Applications made for the legacy Amiga environment that Morphos presents today would of course have to be adapted accordingly and recompiled (or run in a box like UAE or whatever). So this is a possible future path,
not the present situation for MorphOS. Today, MorphOS doesn't present an API
similar to Amiga, it presents *the* Amiga API, *the* Amiga environment that Amiga legacy apps requires to function, and the "modern features" like SMP can't exist here without breaking Amiga. CPU's (68k or PPC) isn't the point, the rules of the legacy environment is.