It's a fad, built of fads. Front-end stuff is able to do a lot more than it was a few years ago, in a lot of different ways. So everyone wants to get on board

It's a fad, built of fads. Front-end stuff is able to do a lot more than it was a few years ago, in a lot of different ways. So everyone wants to get on board (it's a fad) to take advantage of that, trying various things out, hoping to find the best way (those attempts become fads) to do things. Most of it is noise and only time will tell what was signal. Some few classics will live on, but most of what is being done now will quickly be forgotten. So things are rapidly starting and also being rapidly relegated to the dust-heap.