People who use it from ClojureScript, for one. Due to the nicer Clojure syntax you don't need a templating language, just a data convention (hiccup in this case).
For those of us who hope JS will slowly become just a compile target, a downside of of JSX is that it's tooling is JS specific, and the syntax is tailored to JS. So it's great that React isn't married to JSX.
For those of us who hope JS will slowly become just a compile target, a downside of of JSX is that it's tooling is JS specific, and the syntax is tailored to JS. So it's great that React isn't married to JSX.