It sounds more to do with correlation vs causation people who are more likely to greet others could have a variety of different factors in their lives making them feel less isolated. One of them unironically states that it helps with the Career Wellbeing of an individual which is indicative that it doesn't really do that.

Ok, we'll change the URL to that from https://www.goodnewsnetwork.org/mister-rogers-had-a-point-ro..., which points to this and seems a little spammy.

I guess we'll keep its title though because the top comment ("Mr. Rogers was my actual neighbor") won't make sense without it.