History
From Chinese books written in English on the history of exercises (as well as martial arts), I understand the meaning of kungfu or gongfu to be much more ancient than any of the arts: it's a word for,
an activity of great skill.
In other words, it could be applied to say, a fisherman, smith, or cook, 2 centuries BC.
Current Use
The way it's applied, the idea is sort of right, but also strange language: Kungfu doesn't mean you're skilled at 'Kung', while 'Fu' isn't a separate word with the meaning preserved.
I think it's an accident, inspired by the display of skill in popular martial arts movies, and applied to everything, but using a strange concatenation.
Meaning
It would be more correct to write, and it would preserve the meaning to write,
'Script kungfu'
or
'Google kungfu.'
It's also a skill you exercise, rather than an achievement you can point to after the fact. This is different from Western thought, and also means that at any time, anyone can practice a skill, in order to exercise it; and that exercising it has a point, and could be the point.