I completely agree that a husband/wife should complain about their spouse's anxiety-provoking, annoying behaviors.

But the definition of scapegoating is to blame an innocent person. So it would not be correct to blame your spouse for something that is not their fault.

I have seen this type of behavior often, where people are stressed out due to external circumstances and they criticize or blame someone else for their unhappiness: An out-of-work husband badmouths his wife; A couple who are having trouble selling their home begin to criticize each other; An overworked employee gets overly upset with coworkers over trivial matters

A fictional, but (I think) relevant example is when George Bailey tells his daughter to stop playing 'that damn piano,' it's really because he was stressed out about the lost money and imminent bank foreclosure. His daughter was not truly the cause of his anxiety, but rather the scapegoat.

You mean there are articles on this website?????