> I think the world has moved on from facebook

The HN bubble has moved on for sure, but going by DAU/MAU (which isn’t perfect but is better than “I think”), facebook is still the biggest and is still growing

I just don't see how. I have several neices and nephews. I use facebook to share photos of family and such. I rarely see any activity at all from the younger relatives that I'm following. I just don't think it happens, they should be getting at all social media rather than just facebook. I don't support any of these "think of the children" laws though, because basically the government wants to use it as a backdoor to track everyone and their cat on social media.