Encourage your S do do this, don't throw your typical wet blanket on it.
I have encouraged it because I know it will blow up in my face if I don't. I've mentioned a few dozen times here that my kids are (nicely) calling me out on my negativity.
Maybe. You could be right. It might blow up in your face if you don't.
I used an absolute which of course isn’t true. I will say more often than not my negativity (at home) bounces right back to me. That feels bad so it is acting as a huge deterrent to stop. Just being silent is a protective measure now.