The three main disadvantages of React native brought up are:
- lack of commitment from Facebook about maintaining it for a long time. This one is the most bothering to me but it's not a dealbreaker.
- doesn't like Javascript and its related ecosystem. This doesn't bother me in the slightest, I love modern JS.
- the whole all your patents are belong to us thing that comes up every so often. I'm not a startup founder or a lawyer so I will leave such concerns to them. If my employer wants to let me develop in React, all the better for me.