I think it's a shortcut for saying that react doesn't have an 'official' routing library (like vue-router) and state management library (like vue's pinia). So depending on what you choose to manage routing / state, one react app can be quite different from another.
Maybe nowadays there is a set of popular libraries for react so it becomes framework-y?
Vue-Router and Pinia have always been optional add-ons for Vue too, however, yet the Vue ecosystem seemed to to fine without those "aaakshually“ kinds of people that feel the need to micro-manage other people’s speech.
Maybe nowadays there is a set of popular libraries for react so it becomes framework-y?