The second sentence is not supported by any of the historical uses of the word "hacking", whether it's the original one (a vaguely defined definition involving deep knowledge and stretching the limits of computing systems) or the debased one ("breaking into computers"). Many of the earliest 'hacks' occurred well in advance of any defined APIs for anything but are still clearly recognizable as hacks (e.g. some of the clever tricks in HAKMEM, for example). Dividing a number by a constant but multiplying by a magic number is a hack, for example, but no API has been violated here.

That's a shame, because recognizing the distinction between "mere coding" and "hacking" would be a good idea.