In the older version of the website, clicking on the 'Support' link redirected to the list, from when clicking on the 'mailing lists' hyperlink directed to the names of mailing lists. However now on the support page (https://www.postgresql.org/support/), clicking on mailing lists takes me to the subscribe/unsubscribe page (https://lists.postgresql.org/) and to actually see the list names I have to use google to go to (https://www.postgresql.org/list/).
It seems like the previous link to actual list names was better than directly taking a user to the subscribe page, as intuitively one will want to know what lists exist before they may want to subscribe.