Maintainers and contributors have overlapping but subtly different responsibilities AFAIK.
Maintainers are the ones responsible in the end for the state of the repo while contributors suggest changes.
Maintainers are the ones responsible in the end for the state of the repo while contributors suggest changes.
So definitions does not matter when stats that author refers, does not include a developers who own over 50% code in repo, but includes me as contributor.
That's widely known problem of programmers to believe that world is perfect and all data are always actual. Actually it won't.