I would say no, at least not yet. When people playing the Rebels actually coordinate the use of the Y-wings then it may become an issue. At this point in the game people jump in the Y and head into battle with or without a gunner, with or without a wingman.
Now imagine three Y-wings flying in a close formation with the middle craft flying upside down relative to the other 2. This allows covering fire in all directions. Add in one or two X-wings and the formation becomes very powerful. Just getting to the target is no longer a lone and risky flight. Chances of landing some torpedoes has gone way up.
Agreed that a good crew in a Y-wing is going to win nearly every 1 vs 1 encounter. But I'm sure the devs are expecting to see the teamwork factor upped a notch in these types of situations.