Mozilla has told BleepingComputer that they will be enabling the tracking feature called hyperlink auditing, or Pings, by default in Firefox. There is no timeline for when this feature will be enabled, but it will be done when their implementation is complete. Some users feel this feature is a privacy risk and that users should always have the ability to disable it if they wish. Brave Software and Chrome Software also do not enable this feature by default and did not appear to be doing so in the future.
Source: https://www.bleepingcomputer.com/news/software/mozilla-firefox-to-enable-hyperlink-ping-tracking-by-default/