Sure, you can use pgcli instead of psql. But it doesn't replace psql. In fact, most tasks described in the article cannot be accomplished with pgcli.

- it can't list schemas with \dn

- it can't list materialized views with \dm

- \dt <star>.users doesn't work as it does in psql, i.e. it just lists all tables due to the * instead of listing users tables in all schemas

- it can't use your editor with \e

- it can't input existing files with \i

- it can't redirect the output with \o

- it can't extract data with \copy