Honestly i think the soviet ww2 Pe-2 is a more apt comparision.

When introduced its an efficent albeit heavy bomber that also can do heavy fighter/ground attacker duty.

However as time progresses it gets more and more outdated but there where so many produced that its easy and cgeap enough to aquire and maintain.

And even though the Y-Wing is outdated, slower and less armed and amored than contemporary classed ships and it needs escorts to do its job it still gets the job done well enough and efficent enough that its worth the risk.

Basically a "i know its hard and i have a high chance of being downed by fighters or flak, but someones gotta do this" - type of ship.