Tagging the whole role with uninstall caused install/configure/update/export to run first. Use include_role tasks_from uninstall.yml; add safe defaults for uninstall variables.
Remove binary, config, masq, system user, ufw rules, and apt packages from VPS; delete output/<server>/ by default and rebuild global index.html via localhost play.
Use Ansible password lookup on the control node so install works before packages are installed on VPS and without pwgen on macOS. Export EDITOR=nano in Makefile for vault-edit.
Sergey Antropoff