It means most non-tech people spend all day on the damn site, either on their laptops or on their phones.

For a lot of people today Facebook is the Internet

I wouldn't really say that 'most non-tech people' do that, though many may. Of course it's a popular site. There's a still a lot of room to go before being a very popular website and 'ruling the world'. I'd consider maybe an entity that was a combination of Google, Apple, Intel, Microsoft, Facebook, Comcast, AT&T, the US, EU and Chinese Government to qualify, but for a very popular website to be referred to in those terms, I'd like to hear some more details about what they'll actually be doing with all that attention.