Hi,
So I found this other thread
https://lists.gnu.org/archive/html/emacs-devel/2017-12/msg00667.html
where plist support for json.c is briefly requested and discussed, but
there didn't seem to be an overwhelming argument against it, so I had
another look at the file and it didn't seem very hard or problematic to
implement.
I'll try to respond to that thread as well, please give me some time.
My primary argument was that there aren't good enough arguments for supporting plists.
PS: Take this opportunity to thank Eli and everyone else very much for
the Emacs 26.1 release!
Indeed, thanks a lot Eli!