Excellent advice. Most grown-ups I know don't feel the need to get involved in private aspects of people's lives that they don't know.
lamenting unwed motherhood, homosexual adoption etc. as national trends, as being bad for society, in no way interfere with anyone's personal lives, and is a perfectly adult behavior in a free society. you would ban such discussion?
It's in the news. It ain't private.
And guess what? We are free to speak about what other people do.