That talk about *not* being paid by lines and then recommending to write more lines is a bit strange. If we were paid by lines then by all means use the longer version. But because we're not, shouldn't you recommend the shorter version? Well, as it turns out, many developers are in fact paid per lines, because they are paid by time, and writing more code takes more time. At the end, the remark misses the point: Always write the version that is the easiest to understand.
I also thought that he sentenced it weird, but one way for it to make sense is that he probably meant, that they, as the docker team, don't get paid by us, docker users, for every line we write. Actually it was funny to me, because i remember my TL once told me they we are not charged for every typed symbol, when i gave some function a short non-descriptive name.
