I have a "security blanket" too, but it's a pillow I was given as a small child.
I've also felt ashamed for sleeping with it, it feels like it makes me infantile or not grown up, so I put it in a closet for many years. The past year or two, though, I've realized the comfort is more important to me than feeling ashamed, so I sleep with the pillow every night, usually I hug the pillow and sleep with it against me. It's one of the few such comforts, and nothing else comforts me like it - even other pillows or plushes I have tried.
I'm not an expert in media or journalism, so don't take me seriously, but my speculation is that because American corporate media is for-profit and competing for attention, when something is new and getting attention, everyone competes to grab as much of the attention as possible (while it still generates interest), creating a fear of missing out for those who don't try to monetize the new thing.
You see this in all kinds of markets, like - why were two big blockbuster movies about Napoleon produced and then published around the same time? The anticipation of a cash grab invites others to see if they can get in on it and siphon some of the cash for themselves. Producers all compete to capitalize on consumer fads in general, and fads can even be artificially generated, through manipulation of consumers (whether through celebrity or influencer endorsements, guerilla marketing, or just traditional advertisements).
Media is just another form of consumption and shows the same ebb and flow as other consumer markets.