2) Weird idea about what an ETL pipeline is all about: The end product here, that they "load" by saving to a file, is more something you'd get out of a data warehouse that you've ETL-d all your data into.
3) ETL is mainly ELT nowadays anyway; even though the latter acronym may have become popular only from the mid- to late 2010s onwards, that's what we did from at least the early to mid-00s. (Only we usually still called it "ETL".)
2) Weird idea about what an ETL pipeline is all about: The end product here, that they "load" by saving to a file, is more something you'd get out of a data warehouse that you've ETL-d all your data into.
3) ETL is mainly ELT nowadays anyway; even though the latter acronym may have become popular only from the mid- to late 2010s onwards, that's what we did from at least the early to mid-00s. (Only we usually still called it "ETL".)