Add opt-out-of-FLoC headers by default

roles/matrix-nginx-proxy/defaults/main.yml

@@ -239,6 +239,16 @@ matrix_nginx_proxy_proxy_event_additional_configuration_blocks: []
 # A list of strings containing additional configuration blocks to add to the nginx http's server configuration (nginx-http.conf).
 matrix_nginx_proxy_proxy_http_additional_server_configuration_blocks: []
 
+# Controls whether to send a "Permissions-Policy interest-cohort=();" header along with all responses for all vhosts meant to be accessed by users.
+#
+# Learn more about what it is here:
+# - https://www.eff.org/deeplinks/2021/03/googles-floc-terrible-idea
+# - https://paramdeo.com/blog/opting-your-website-out-of-googles-floc-network
+# - https://amifloced.org/
+#
+# Of course, a better solution is to just stop using browsers (like Chrome), which participate in such tracking practices.
+matrix_nginx_proxy_floc_optout_enabled: true
+
 # A list of strings containing additional configuration blocks to add to the base matrix server configuration (matrix-domain.conf).
 matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks: []