Glue often uses EMR under the hood, which is often Spark. And Athena is PrestoDB, as far as I know it has nothing to do with Hadoop other than you can use it to query Hadoop data stores.
The way I see it, Hadoop is still in common use as the storage layer for Spark and related implementations, whether that is in the form of HDFS or something like EMRFS:
Quote from AWS: "EMRFS is an implementation of the Hadoop file system ..."
Ah - that's a good point. Usually when people say "Hadoop", I assume they're referring to HDFS, but there is (was...) the Hadoop MR system that ran on top of it that has been almost entirely replaced by Spark.
