Nguyễn Thái Ngọc Duy [off-list ref] writes:
I notice a couple times lately that people added new config keys in
the wrong place, which is understandable since this file has become so
big, it's hard to see the structure of anything.
Since we have broken down some parts of it into separate files
already, this continues in that direction and moves even more parts
out of config.txt.
Especially with [ref], which is
your recent update to the "git help --config" collection machinery
in place, this sounds like a sensible move.