React was released 7 years ago in may and is definitely the most dominant framework and going very strong, and will be a good career investment for years to come. I think framing that "momentarily" for yourself is making yourself very unhappy - life changes constantly, as we see with this pandemic, and we need to have a little bit or willingness to accept change every five years or so, or perhaps we need to choose a field that has less competition (which is also why we enjoy great benefits and great pay). It should also be noted that both Vue and Svelte are extremely similar paradigms to React, and not at all the big paradigm shift that we saw from Angular to React.