Another article saying rest has no way to limit the data. There are tons of ways to do this, the API you are using as an example chose NOT to implement any. OData had a way to limit data, even pass query params, join info, etc. This is not new.
GraphQL is not magic, someone still had to implement the API to do the query the right way, etc. You can do the same and expose a REST and GraphQL endpoint that do the same things.