GnuMach, minix and linuxkernel

[sigbj-st]

Mach/GnuMachkernel is going to replace the unix/linuxkernel in the future 
mainly because of the advantages of a microkernel versus a monolithic kernel 
that ends to grow bigger and bigger and thus getting too resource demanding and 
also awkward working with.

Tanenbaum - the man behind the microkernel minix - has always regarded the 
linuxkernel as a step backwards as an architectural foundation for an OS even 
though the success of the linuxkernel is appearant.

Is the work with HurdOS running as multiservers on top of GnuMach a realization 
of Tanenbaums views here and thereby a corollary of his and these logical 
pursuances?

Have I understood it right when I here presume that minix has a more 
unixfashioned architecture which lack the specific features of Machs 
task-thread-port functions and therefore cannot be improved as replacement for 
the linuxkernel?