Common sense hasn't a chance against political correctness, simply because common sense is a private conviction whereas political correctness a shrill, public stance where resistence provokes attack few are able or willing to countenance.
Given the spread of so-called social media, where kids are exposed to the alternative reality (I was going to write faux reality, but sadly, it turns into real-life beatings and even suicide) 24/24, there is no escape from the beginning of life.
Recent Sky News reports tell that child psychological problems are today vastly higher than they ever were. Surpise, surprise. Ban all cellphones from school, and in a few years things may revert to a more acceptable level of normal, life anxiety.