SPAs can easily consume data from any API provider, including WordPress. Also, with this kind of architecture, websites don’t need to make numerous HTTP requests to load each web page, which significantly improves user experience.
Why use React/Angular with WordPress REST API?
WordPress has evolved to include several new features with each new release. A lot of features may be futile for many users. Perhaps, it is primarily and better used as what it is meant for—a content authoring system.
So, why not make the traditional CMS less voluminous and make it faster and more efficient? Why not use it only for content management?
You can redefine how you develop your website with WordPress using WordPress Rest API. The API frees you of the need to use its built-in themes and plugins.
Yes, WordPress powers more than 30% of the web, but it is not the best platform to build a website’s front-end. Sometimes, only expert developers can understand its theming structure. This is why you need React/Angular for theming.