Another attempt on fixing the install boolean.

defaults/main.yml

@@ -1,6 +1,6 @@
 ---
 ntp_service_install: '{% if ansible_distribution_version is version_compare("24.04", "<") %}true{% else %}false{% endif %}'
-ntp_service_enabled: '{{ ntp_service_install }}'
+ntp_service_enabled: '{{ ntp_service_install | bool }}'
 ntp_statistics_enabled: false
 
 ntp_allow_external_clients: false

tasks/main.yml

@@ -1,7 +1,7 @@
 ---
 - name: Display the value of ntp_service_install
   ansible.builtin.debug:
-    msg: "ntp_service_install: {{ ntp_service_install }}"
+    msg: "ntp_service_install: {{ ntp_service_enabled }}"
   tags: ntp
 
 - name: Manage the NTP service in the Deb distributions

tasks/ntp-deb.yml

@@ -1,7 +1,7 @@
 ---
 - name: ntp-deb | NTP server installation
   tags: ['packages', 'ntp']
-  when: ntp_service_install
+  when: ntp_service_enabled
   block:
     - name: ntp-deb | Install the ntp server
       apt: pkg=ntp state=present cache_valid_time=3600
@@ -15,7 +15,7 @@
 
 - name: ntp-deb | NTP server installation
   tags: ['packages', 'ntp']
-  when: not ntp_service_install
+  when: not ntp_service_enabled
   block:
     - name: ntp-deb | Ensure that the ntp package is not installed
       ansible.builtin.apt: