I tend to agree with the author. GraphQL has its use cases, but it is often times overused and simplicity is sacrificed for perceived elegance or efficiency that is often times not needed. "Pre-mature optimisation of root of all evil" comes to mind when GraphQL is picked for efficiency gains that may never become a problem in the first place.

Facebook invented GraphQL to solve a very specific problem back in 2012 for mobile devices. Having to make multiple queries to construct the data needed in FE in mobile clients is bandwidth constraining (back then over 3G networks) and harmful for battery life, so this technology solved this problem neatly. However, these days when server-to-server communication is needed over an API, none of the problems Facebook invented the protocol for are problems in the first place. If you really want maximum efficiency or speed you probably ought to ditch HTTP entirely and communicate over some lower level binary protocol.

REST is not perfect either, one thing I liked about SOAP was that it had a strong schema support and you got to name RPCs the way you liked, and didn't have to wrangle everything around the concept of a "resource" and CRUD operations, which often times becomes cumbersome to fit into the RESTful way of thinking if you need to support an RPC that "just does magic with multiple resources". These are the things I like about GraphQL, but on the other hand REST is just HTTP with some conventions, which you necessarily don't have to follow if things get in your way, and is generally simpler by design.

The only thing I wish with REST is having a stronger vendor support for Swagger/OpenAPI specs. One of the things my team supports is a concept of Managed APIs for our product: https://docs.adaptavist.com/src/latest/managed-apis and we support primarily RESTful APIs but also couple of GraphQL based ones and the issue we face is that REST API specs for many products are either missing, incomplete or simply outdated, so we have to fix them ourselves before we generate our Managed API clients, or write them by hand if the specs don't exist. It's becoming easier with AI these days, but one thing I personally regret when we transitioned from SOAP to REST as a community, is that the strong schema support became a secondary concern. We no longer could just throw API client generator at SOAP's WSDL and generate a client, we needed to start handcrafting the clients ourselves for REST, which is still an issue to this day, unless perfect specs exists, which in my experience is a rather rare occurrence.