Well unfortunately Tizen, if that is what you are referring to, is switching to EFL.
So, yea. They are reinventing the wheel. And in their cooperation with Mer they are fracturing the efforts further because Mer seems to be sticking with QT environment. So they seem to be doing the same thing that has always happened and has always lead to failure. Users don't give a damn about toolkits, they care about how the interact with the UI and applications. All app developers care about is developer tools and that the core developers produce the minimal of bad interfaces possible. What sort of technology that drives the platform is almost irrelevant compared to those group's concerns.
I am not going to say that Tizen shouldn't do what they are doing or that Mer shouldn't do what they are doing. I am just saying is that if they want to make a relevant platform for consumers and developers beyond the core developers and a handful of hobbyists then they are probably not going to make any progress at all.
I don't really know their goals, though. If they are just making it for themselves and a relatively small group of hobbyists then they are doing a good job.
Good luck to them and if they ignore my observations then that's fine. I really wish them good luck. I've been plenty wrong before about other things.