Rule one is making code that works correctly and quickly, in a short about of time. This is 100% of the job.
If you think that "maintainability" and "readability" and "popular" libraries, and "code reuse" and "good variable names" and code that "smells good" to you, help someone do that, then great: That's an argument we can have just by pointing to anyone who gets rule one without those things.
However.
There's another kind of person - and there's a lot of them - who thinks those things are important by themselves, and that putting those things ahead of what I think are rule one is ever acceptable.
The number of times I've heard some "experienced" programmer say with all earnestness that we should ask for another 1/4 million dollars of tin so that he can use his "clean" (but slow) algorithm makes me wary of anyone who uses those words you just used in seriousness.
That's the person the parent comment is mocking.