Why would queries on TIMESTAMP not produce human readable strings? Postgres has defaulted to a human readable mask for timestamp presentation for at least 25 years.

See Current: https://www.postgresql.org/docs/current/datatype-datetime.ht...

And 7.1 (2001-04-13): https://www.postgresql.org/docs/7.1/datatype-datetime.html (Section 3.4.2)