It’s easy to dismiss iOS 7 has a particularly bad case, but based on the list below it seems you might have a selective memory (no offense, just trying to help fix it)...
10.3.3
10.0.3
9.3.5
9.0.2
8.1.3
8.0.2
7.1.2
7.0.6
6.1.6
6.0.2
As you can see, going back to 6.x days, being at a X.Y.2 or higher patch release is really not that uncommon.
As to 4.2, that was before my time. Not an excuse, just an explanation.