Because I’m not a R programmer, nor am I an Ember programmer. In the same time, I have lots of React.js experience and I love building stuff with using it.
It’s not that learning Ember is difficult. It’s that I hate its paradigm, so would like to keep its usage to the minimum.
Okay, well, thanks for commenting - anyway, this one is not the critical point. What I wanted is to allow easy React embedding in particular Discourse pages.