I've struggled to find a clear definition of what it means to have "taste" when working with AI, so I wanted to try to find examples.

Here's my example:

React.js was released in 2013 (before I started programming professionally, so I could be wrong about this). But taste is knowing that React is the "future" even when all the training data that AI would've had until at that point in time was with Angular, Backbone, jQuery, etc. So no AI would suggest React, purely because it's too new and not enough training data, right? But having "taste" is using React.js over what is recommended by AI?

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What does this imply? Is it possible, that if modern/good AI existed in 2013, we would've never used React.js because many folks would just "vibe" Angular or Backbone?

Is it possible the next best framework or language or tool already exists, but it will never get the light of day because it's not part of the AI training data?