I poked mgorny long ago, now it is time to file a bug, as example I still can accept PRs for g-p-m project
Yes, and you can also commit to any package in the Gentoo repository. It's not a bug.
Oops, I meant I can not accept Prs (there was a typo in the original message). I see *only authorized person can perform the operation* message
The "merge" button was deliberately restricted because the GitHub gentoo repo is a read-only mirror. If you pushed the merge button your commits would get blown away on the next automated force-push. You should pull the PR changes locally (eg. via git pull, fetching the patch manually, with dev-perl/Gentoo-App-Pram or whatever method you prefer) then push to git.gentoo.org/repo/gentoo.git as normal.