It's like everything else in the JS world. A new solution to a solved problem. It takes more than an incremental improvement to outweigh the learning curve and

It's like everything else in the JS world. A new solution to a solved problem. It takes more than an incremental improvement to outweigh the learning curve and development costs. New things should be an order of magnitude better. If a new technology isn't obviously better then it should be ignored. Developers have shiny object syndrome.