Comment by contrahax

You can’t use those extensions on almost any cloud like AWS, GCP, Aiven, etc. - I think Azure is the only one offering a citus product because they acquired them. Also extension updates are a major pain point in hosted DBs - always lagging behind. Having some solution in core would resolve this, even if it was just bundling some best in class extensions out of the box to bypass these cloud providers very selective extension support.