Hey Jerry, it's nice to see you here :) Truth is, the work you guys did at Hydra with the fork of Citus columnar is the more Postgres-idiomatic analytics engine in Postgres. It's a shame it was abandoned.
I'm not sure that saying it's abandoned is quite accurate. looking at it from a (now outside) lens, I see it as more of a hard engineering project.
I still use columnar: it's very mature at this point, but any further (large) improvements would require a lot larger engineering efforts.