It's worth considering that Carrd didn't start from 0. He had a pretty big following already from his work that has overlap with the type of user that Carrd wants. Having momentum from the start can be huge for this kind of service.
The official React tutorial starts you out by installing create-react-app. I know that vue has something similar and I wouldn't be surprised if others did as well (are there even other important front-end frameworks besides React/Angular/Vue at the moment?)
This allow you to start off with a great setup and skip the configuration so you can get started with just writing React. I highly suggest starting with official docs before writing these off. A lot of other tutorials are of varying quality but you can trust the official docs for sure until you learn more about the community and which resources are worth it (or just use this https://github.com/markerikson/react-redux-links). It can be overwhelming if you aren't actively following the front-end world but the reality is that you need very little node knowledge and can go a very long way without ever touching webpack + babel. Even then, once you get to the point, learning to configure those things won't take much time and to me, it's worth it for the developer experience.
If you really want to dabble in just writing React code, you can also try these browser IDEs if they float your boat.