I might agree on the reality, but the market rate of pay for React programmers is considerably higher than that for Magento, whether this is fair or well advised or not.
I can't argue there. Career wise, React is a good choice. It is a really cool piece of technology too. I have been very resistant to the new hat frontend frameworks, mostly because I had a strong methodology for frontend UI already and there was no sense throwing it away. But even I put React in my toolbelt recently.
React was the first front end framework that felt "right" to me. Of course, I was a fan of templating with E4X (which never gained support outside Adobe and Mozilla).