Does Mozilla have a point in not allowing me to customize fonts through policy? No comment.

conf/firefox-forbidden-policies.js

@@ -18,6 +18,15 @@ pref("cookiebanners.bannerClicking.enabled", true);
 pref("cookiebanners.service.mode", 2);
 pref("cookiebanners.service.mode.privateBrowsing", 2);
 
+// I can set my preferred fonts in an order! :O
+// but obviously this is forbidden in policies.json!
+pref("font.name-list.monospace.x-cyrillic", "Noto Shanns Mono, monospace");
+pref("font.name-list.monospace.x-western", "Noto Shanns Mono, monospace");
+pref("font.name-list.sans-serif.x-cyrillic", "Noto Sans, sans-serif");
+pref("font.name-list.sans-serif.x-western", "Noto Sans, sans-serif");
+pref("font.name-list.serif.x-cyrillic", "Noto Serif, serif");
+pref("font.name-list.serif.x-western", "Noto Serif, serif");
+
 // Play animated images only once, accessibility.
 pref("image.animation.mode", "once");
 

etc/firefox/policies/policies.json

@@ -423,6 +423,42 @@
         "Type": "string",
         "Value": ""
       },
+      "font.name-list.monospace.x-cyrillic": {
+        "Comment": "Preference not allowed for stability reasons.",
+        "Status": "default",
+        "Type": "string",
+        "Value": "Noto Shanns Mono, monospace"
+      },
+      "font.name-list.monospace.x-western": {
+        "Comment": "Preference not allowed for stability reasons.",
+        "Status": "default",
+        "Type": "string",
+        "Value": "Noto Shanns Mono, monospace"
+      },
+      "font.name-list.sans-serif.x-cyrillic": {
+        "Comment": "Preference not allowed for stability reasons.",
+        "Status": "default",
+        "Type": "string",
+        "Value": "Noto Sans, sans-serif"
+      },
+      "font.name-list.sans-serif.x-western": {
+        "Comment": "Preference not allowed for stability reasons.",
+        "Status": "default",
+        "Type": "string",
+        "Value": "Noto Sans, sans-serif"
+      },
+      "font.name-list.serif.x-cyrillic": {
+        "Comment": "Preference not allowed for stability reasons.",
+        "Status": "default",
+        "Type": "string",
+        "Value": "Noto Serif, serif"
+      },
+      "font.name-list.serif.x-western": {
+        "Comment": "Preference not allowed for stability reasons.",
+        "Status": "default",
+        "Type": "string",
+        "Value": "Noto Serif, serif"
+      },
       "general.config.obscure_value": {
         "Comment": "Required for autoconfig.",
         "Status": "locked",