For example, JSX is an abstraction level I'd like to use. It requires an npm install to set up to contribute to production code. It has already crossed the threshold of an easy on-ramp for say, an intern -- because if this involves a first-time npm set-up on their machine, there goes the rest of the week.
With Vue to start using another feature/abstraction layer, you never have to do additional setup (your html file includes the vuejs script already), you just read the syntax docs and get going.
Additionally, React (and redux even more, yes) involves much more boilerplate than Vue does for every new feature you want to use, which is often more verbose/obtuse and hard to parse for a junior web developer.
Sorry, in your last post you specifically mentioned only terms that apply to Redux. React has no concept of actions, reducers, etc.
If you read my top comment I specifically talk about React’s function component, which is the least verbose way to describe an interface across any framework. Unless you can think of something easier than (props) => <h1>{props.name}</h1>
Honestly you just need new interns.
My cofounder suggested I check out vue for the rewrite of our legacy project, and I was able to onramp SO easily. I can easily hand off components to other team members to write, and it rarely broke stuff in the rest of the project. On the whole, vue feels a bit less powerful but a LOT simpler to wrap your head around while subscribing to the reactive UI paradigm.