Well I have 100s (literally because I work a lot with incubated startups) of anecdotes like that; when something is not react but makes bucket loads of money anyway (pro tip; those two things are absolutely not related at all), there will be someone who suggests a rewrite in React (native) for a reason that makes no sense to anyone but the people who are starry-eyed looking at their heros on Youtube giving low-tech presentations but with such an air of superiority. Well they DO work at Facebook (wait was that not some immoral company? Wait, wasn't the first version written in PHP which we all (...) hate here by the robot CEO everybody thinks is slightly insane these days? I guess that doesn't affect the tech now so let's ignore)!

Edit: I did not mean the last part sarcastic although it reads like that; I think Zuckerberg is a vastly overrated twat but that or that the product of the company currently sucks (yes yes IMHO, but many people agree and I mean currently; it could be great, but shareholder value) does not have anything todo with technical merit.