As a very rough guide, this data hints that each 25 thousand lines of open source requires one more maintainer.

Most of the time 80% of the code is written by a single programmer.

hello,

as always: imho (!)

i'm not sure, but loc as a measurement for complexity ...

sure, why not!? this argument is rather trivial: more complex software will have more lines ...
this will even be intuitively understood by the most junior (non)devel on the planet ;))

the internet full of people dismissing the loc metric(s) are the ones who argue against loc as a measurement for work / progress of work / success in software development - eg. "i wrote n lines of code today" ...

just my 0.02€