Yeah, I learned an enormous amount from it when I encountered it (in hard copy of course) in 01996, and some of what I learned is now no longer relevant.
Also, Morello includes some Lisp-machine-like features. In my view knowing about the history of hardware architectures is far more important for designing new ones than for reproducing old ones.
There are some people building new Lisp machines: https://opencores.org/projects/igor https://github.com/lisper/cpus-caddr https://interlisp.org/ http://pt.withington.org/publications/LispM.html http://pt.withington.org/publications/VLM.html https://github.com/dseagrav/ld http://www.aviduratas.de/lisp/lispmfpga/ https://groups.google.com/g/comp.lang.lisp/c/36_qKNErHAg https://frank-buss.de/lispcpu/
Also, Morello includes some Lisp-machine-like features. In my view knowing about the history of hardware architectures is far more important for designing new ones than for reproducing old ones.