The motivation for many clones is the Facebook patent clause in the react license. My company said "no way" to using react because of it, and I'm sure many others do as well.
So use a similar technology, likely also infringing on Facebook's React patents vs. protection that only applies if you don't sue Facebook over patent issues?
Facebook's Patent grant is expressly for use in case you sue Facebook over patents... I'm pretty sure if you do that (sue fb), they'll look at everything they can use to sue you... That would include other technologies that may infringe on any Patents related to React.