There are still things to be mentioned:
Rest has no dependencies, while GrahQL has many. With Rest you show what you want on the server side, which may be safer than GraphQL, since I can enter a page in Javascript and modify the code to make the queries I want. In the end you have to work more with GraphQL
The example is wrong because I would only use one call not 3, that would show everything, while with GraphQL, I only get what I ask for.