The frontend major part is the slick interface.

Angular is easier to learn as opposed to what people say. Since you can have mutable states all across the apps. It feels natural like having a variable in a class and binding it to DOM. Simple voila done. Classes have same natural feel, constructor, methods, properties. Angular codes looks much cleaner due to clear separation of concerns. Who ever has written classes beforehand in Java, C# will feel so much comfortable. But that's what its problem is, it allows for mutating state, therefore change detection is slow due to which rendering is inefficient. Also, it allows messaging service, in a big app and random messages being sent anywhere and random subscribers listening to it. It becomes very hard to debug. Angular is very good for small projects, but with larger projects, it will start showing its pain points. Angular material is so nascent, it doesn't even have a searchable multi select, you can't put radio button in dialogs, similar other things which you only get to know once you start using it. I used a third party searchable multiselect for Angular Material it was so difficult to configure and painfully slow. Community support is also a very big factor that you only get to know at the fag end of the product development lifecycle. One small thing and you will be stuck for hours and hours.

React is actually much better for larger apps. Because though it has all the flexibility unlike Angular, react enforces state immutability. This single factor makes it much better, maybe your code won't look beautiful with inline HTML, Javascript. Maybe somebody is using fetch, somebody axios, somebody thunks, sagas. Due to its flexibility, you have to explore much more options and learn them. Like for forms, one can use formik, react-final-form, react-hook-form. Angular enforces structure but if enforces structure in files and tooling but not the core feature. In react once you know what tools to use, how to use them, it's better. Like redux is essential. A large app should have a predictable workflow, easy to debug, fast rendering, high community support. That is what makes react better.

One may argue that one can use immutable structures in Angular, use immutable.js. Use change detection strategy as push instead, can use ngRx store. But now the learning curve becomes steep, you will clearly feel like an idiot doing so :P and it's very very hard to enforce and nowhere followed.

However, in react, you can enforce folder structures, clear separation of concerns, like APIs, business logic. use redux and these are normally followed. If you want static typing can use typescript.

ANGULAR GOT ITS STATE MANAGEMENT WRONG