I don't have EE near by, but as far as remember, vfat is an image of internal sdcard, and it's mounted and symlinked.
In easy words, physically there's only one vfat.img, but it content (or name) can be displayed under other locations.

There's nothing to remove from internal memory, except video tutorials (*.mp4, *.avi files)

As for compact code, there's 2 positions. If someone programming for mass market, he must to write code as fast as possible, so his program will be sucks, but he will outrun the competitors and earn more money. If someone programming for serious company, he must to write an optimised code, 'cos in case of any problem he will lost the job, and the company by itself lost big money. I'm usually programming using the second way. But in terms of games, or apps for new market (like android) programmers used the 1st way are the winners. Sadly, but it' true.