Popups has a config flag called wgPopupsPageBlacklist
wgPopupsPageDisabled would be a better choice of name
To make this transition smoother, rely on the fact that the config in production is set across all projects and simply change its default value to:
```
'Special:CreateAccount',
'Special:GlobalRenameRequest',
'Special:Userlogin',
'Special:MergeAccount',
'Special:ChangeCredentials',
'Special:OAuthListConsumers',
'Special:GlobalUserRights',
'Special:Notifications',
'Special:UserRights',
'Special:Upload',
'Special:VipsTest',
'Special:ApiFeatureUsage',
'Special:ExpandTemplates',
'Special:GadgetUsage',
'Special:GraphSandbox',
'Special:TemplateSandbox',
'Special:MostLinkedFiles',
'Special:Book',
```
# a/c
[] Rename isTitleBlacklisted in Popups extension
[] Rename config flag PopupsPageBlacklist to wgPopupsPageDisabled using the default value
[] Remove associated site config