Is it just me or have you all noticed that a dominating actor's tool now, particularly among female actors, is the nodding head?

I have become so oversensitized to the nodding head whenever our contemporary actors wish to convey their:

earnestness
sincerity
"I'm really leveling with you now..."
"This is real; this ain't fake..."

...that I just want to shake them and say,

"For Pete's sake, puh-lease create a new gesture! A new movement! This sincerely nodding head tagged onto the ends of your delivery has turned the lot of you into fuzzy doll dogs in the rear windows of so many cars."