The comment at the end of the GitHub pull request seems self explanatory to me.
Quoting the comment:
Privacy guides has proved so immensely slow with an inane contribution process that it is not worth contributing to. Nor is it relevant for anyone seeking up-to-date privacy tools.
The user who started this PR seems to have thought that it wasn’t worth keeping the PR open without activity for over 4 months.
Maybe someone else could open a similar PR to the previous one, maybe once this tool is accepted for official recommendation by the Privacy Guides team in this discussion.