Sure, but a significant motivation for using GraphQL is to stitch together a bunch of microservices into a cohesive API for the front end.
My comment about Medium using microservices was just an informed guess, but a good one. They started migrating from a monolith to microservices back in 2018: https://medium.engineering/microservice-architecture-at-medi...
Is it a coincidence that that's around the time frame that I noticed the Medium web site becoming slower than it used to be?