Wemind gets updated one of their customers' website using Drupal 6, so that Google Maps can be used in conjunction with an existing solution for libraries where courses are held in different locations in Denmark.
Drupal 6 is still alive. But the overall update process in Drupal 6 is much more difficult compared to the newer versions. Website owners must manually patch the modules and kernel, as security updates are no longer supported by the Drupal Security Team.
We recommend updating to Drupal 8. Or alternatively, wait for a stable version of Drupal 9.