If anyone on wiichat does worse than those basic brawl n00bs, they need to gtfo, lol.
And no, his F-air isn't hard to land, but landing it correctly can be a hassle, mainly because depending if he's standing or in mid-air, he only has a certain window to use it depending on where the opponent is, which can make it predictable and thus, innacurate.
Fox's melee F-air has it's uses, ya know. It's not a bad combo tool if you need to get in a weak hit and then say, do a (BARREL ROLL!) grab and continue a combo. It needs to be L-canceled to accomplish this, ofcourse, which no pro would ever have a problem with.