It is a FAQ. Are the not supposed to answer questions that they have gotten a lot. Even very silly ones. The FAQ isn't just for competitive players.
Agreed.. And no matter how good the wording is, there will be weird interactions that people are confused about. This is not bad design. This is how most game design works. The card text works in 98% of cases, and in those few cases you are confused there is a more detailed description to get you by...
Look at most board games. I've just picked up one called Pandemic: Reign of Cthulhu designed by one of the industries most well renowned designers, based on another well regarded game. Even in a board game with far less interactions than X-Wing they have included 3 pages at the back with a more detailed run down on about 75% of the cards in the game for when something wierd comes up, or to remind of rules details.