I think you're missing the point on the validation. It's what's said. My friend's ex wife had worded her text very carefully, and when he validated (ie, agreed) then boom, she had him and he couldn't argue. And when he tried, her lawyer said you wrote it, didn't you?
Validation is good in the proper context. What must be considered is how things are worded, because everything is admissible, especially to a vindictive person...or one who just wants to win.
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.