> I wonder if his views and toolset have changed since then and he might be amenable to sharing more.

No. He uses WordStar 7 for DOS and made his own installable bundle of it and shared it.

https://www.sfwriter.com/ws7.htm

I incorporated it into my bootable DOS USB key:

https://github.com/lproven/usb-dos

He likes this and thanked me. :-)