It's the Verge. They want you to think everyone is following the trend, when most of the world don't care about foldable phones at all.
The average customer just buys the latest Galaxy or iPhone without thinking about it.
I'm holding off for the coming while with the current RAM prices keeping phones incredibly expensive, but in five or six years when my current phone goes EOL I hope to see affordable options.
And it wasn't 4 years old when I bought it. It was a year old. My point is you can buy second hand of the previous model or so, a lot of people have FOMO and upgrade often even though newer Folds have only minor differences.