I could honestly have seen it going either way before, but after reading some of the good points made here, I think the Y-Wings would have to attack.

Wording aside, from a game mechanics perspective I think it makes more sense. Keeping players active and keeping the game moving are important, and having a squadron just sit there and skip a turn is rather passive.

Well I'm glad that even though my earlier assumptions were wrong, we have discovered some important rules ground to cover anyway.