The Electronic Frontier Foundation warns
against Manifest V3, a set of changes coming to a Chrome browser near
you.
Manifest V3, or Mv3 for short, is outright harmful to privacy
efforts. It will restrict the capabilities of web
extensions—especially those that are designed to monitor, modify,
and compute alongside the conversation your browser has with the
websites you visit. Under the new specifications, extensions like
these– like some privacy-protective tracker blockers– will have
greatly reduced capabilities.