Yeah, the complaints don't seem to have anything to do with GraphQL. Writing efficient SQL for GraphQL resolvers is more or less the same as writing efficient

Yeah, the complaints don't seem to have anything to do with GraphQL. Writing efficient SQL for GraphQL resolvers is more or less the same as writing efficient GraphQL for any application or API. If you just write all of your queries in the most naive way possible, you're going to have inefficient queries. If you pay attention to querying in an efficient way, you will be able to do it without too much difficulty.