Yes, you would think Data would use his super abilities more often. If he can data keypad entry stuff at his Ops console superfast, wouldn't he do it all the time?
Better yet, if he can use his USB ODN whatever plug-and-play into LCARS, why even bother with manual entry?
Only thing I can think of is that Data really
wants to be human to the extent that he will do things well below his abilities, just to emulate a human.