Not in my experience and I have many friends outside of tech circles, since I'm not living in a tech bubble. When people get together group photos happen, or ph

Not in my experience and I have many friends outside of tech circles, since I'm not living in a tech bubble. When people get together group photos happen, or photos that you want, made with somebody else's phone. The result is basically dozens of photos out of which only the best 2 or 3 get shared on Facebook. And in general Facebook is not how those photos get shared. Not even its Messenger because it has annoying size limits, which matter for videos. If I were to guess, out of Facebook's properties, WhatsApp is probably the most popular photo sharing app by volume ;-)