Feature summary (what you would like to be able to do and where):
The Permissions-Policy: browsing-topics=() header (docs) should be set on Wikimedia and Cloud Services (Toolforge etc) pages.
Use case(s) (list the steps that you performed to discover that problem, and describe the actual underlying problem which you want to solve. Do not describe only a solution):
Topics tracks internet use to aid Google's behavioral advertising. Organizations such as the Electronic Frontier Foundation (EFF) have heavily criticized the project due to privacy concerns. To help protect the privacy of users, the movement's sites should opt-out of Topics being generated from browsing on Wikipedia, Wikidata, etc.