Re: maple fretboard treatments
Sure it does. Most Maple boards are finished, because Maple will get dirty instantly. Even if your hands are always perfectly clean, the strings will give off a black residue that will get buried into the board. Once Maple has taken on dirt, there's little to nothing you can do to clean it off. It penetrates like wood stain. You can steel wool it or scrape it with a razor, but then you're removing wood. You can also level the board during a refret to get the top layer off and have a fresher starting point. But if you want to keep the board looking bright, then there has to be a finish on there. For that you can use tung oil, tru-oil, or almost any kind of lacquer/poly finish.
To condition a raw board, you can reapply tung oil every few months, and use steel wool when necessary to cut it back. You could also use a lemon oil, but it's not all that necessary to condition a Maple board.
So it depends on what your intentions are. If you want to keep the Maple looking brand new, then there's nothing you can do besides a lacquer or poly coat. Trying to build up an oil finish is fine, too, but it can get sticky and uneven. EB/MM does a nice job of building up coats, but their boards still get dirty. If you're just worried about keeping the wood healthy, then one light coat of tung oil once or twice a year is fine.