This is one of those things where we had a good idea....Don't beat your kids.
Then we took it and went too far. Just like most movements, we start out handling big problems....like parents giving their kids solid beatings with sticks that scarred them for life.... then started nitpicking for smaller and smaller and smaller things, many of which are non issues...but for the movement to FEEL like it's still doing something, it has to focus on something new...and spanking is next on the list. same thing with the political correctness movement and just about every movement in the last 50+ years.
https://www.youtube.com/watch?v=bNWcDXE5POU