I'm comforted by that, but it also makes me less bullish on the idea of regular people running nodes, which in my opinion is the whole idea of decentralization. I have concerns about potentially storing or relaying child porn, for example.

Maybe social media companies deserve a slight break in this regard. It's a big job to police such things and I've had a difficult time figuring out how to run a node even for myself without screwing up and accidentally ending up with bad stuff in my computer. That's the full context of my post.

Maybe I'm over thinking it, but over is usually better than under. 

 Indeed. Though there are malicious relays. It's the nature of the beast.