The ad revenue is worthless compared to the facial recognition data it can generate. They've all got inward facing cameras, and most have outward facing ones. The company gets the absolute best marketing data they possibly can: demographic information, a face to match to other information, what products you looked for, how long you shopped around for a product, which products your ultimately bought
It's an immensely invasive system but incredibly lucrative for the company. Millions of data points for millions of shoppers nationwide to sell off
It is somewhat organic though, like the US did seed a lot of the propaganda initially, but like most of the West's propaganda it's self-fuelling now. It used to be that people kept to within the lines of the propaganda, now people just invent whatever the fuck they want and the scarier it sounds, the more real it could possibly be - and if you push back, well, you're just a red fash tankie SeeSeePee shill
Like I've seen people just whip out the most asinine shit about China clear out of thin air, and not from terminally online users either. I know someone who's otherwise fully disconnected from politics and online discourse but truly believes that China is building back doors into consumer cleaning robots so that they can map out someone's house and, if they ever speak ill of China, break in and kidnap them to disappear them. He doesn't even mean like dissidents living here, he straight up thinks China will disappear random Canadians for speaking ill of Xi around their Roomba