Well, if more react devs knew how it worked under the hood they might choose something else[1] :-)

Jokes aside, if you don't need two-way data binding, using react frameworks pulls in a lot of crap that you never need.

The majority of web apps have no need for react

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[1] I always joke that the reason I am atheist is not because I don't know much about your religion, it's because I know too much about your religion.