Mr. Rogers Had a Simple Set of Rules for Talking to Children
The article makes an oblique reference to it, but it's worth noting that Fred Rogers graduated from a theological Seminary and his television show was his Presbyterian ministry. Mr Rogers is at the same time a sort of stereotypical Christian character (imagine 
The Simpsons' Flanders without the satirical comedy aspects) and also not the image of a Christian minister that we usually see in the mainstream media and popular culture.Mr Rogers may be most intentionally-Christian cultural influence that wasn't widely noticed as "Christian",  in the lives of millions of people --  for both many people who don't think Christianity is a part of their lives as well as for many people who do.I write this not to proselytize or to suggest that you should become Christian if you respect Mr Rogers, but as a reminder that the image you have in your mind of an X (for whatever X that is a large weakly-connected community) should not generalize to all X, and some very X-ey people might not look X-ey at all.The article also shows that there is often a lot of hard work and educated insight behind things that look very simple and basic.