Header says most of it, has this facility been removed from Google Home and/or Fetch? Was released in January 2017. https://www.finder.com.au/fetch-google-home-support
Thanks for reaching out.
This may not be the answer you're looking for, but Fetch is not officially supported with Google Nest speakers. Were always looking for ways to add more assistant partners. You can check this link for more services that Google Nest speaker supports.