Get a Verified Create Badge for the REUSE Action
I suggest, in order to raise further trust and calm the security people :) :) that this project would try to get the action GitHub verified. Currently, what it really, really implies for the project is a bit of mystery, but hopefully N.G.O's should be as ok as non ngo's s, it most likely involves a bit of security policy practice, example from someone that succeded - https://github.com/orgs/community/discussions/25265#discussioncomment-3247173.
Why is this potentially good? Well, some GitHub organisations have strict security policies - and choosen to tick the "Allow
So, it would further raise the trust bar for organizations looking to use the REUSE action in CI pipes.
Note: I'm aware of that the REUSE project is looking to move to other hosting alternatives long term (https://github.com/fsfe/reuse-tool/issues/865). But, Until that happens - and even after, this would still be relevant, as a GitHub Action still might be published).
Phew, that looks like a painful and intransparent process. While I think the GitHub action will persist even if reuse-tool moves away from GitHub, I am not even sure how to start tackling this without wasting too much time knocking at doors.
Are you sure that so much needs to be done so it is painful - how would one know if not asking? :) I guess all that needs to be done to find out is sending a short mail and ask - "What steps needs to be done to get a verified creators badge for the GitHub Action of REUSE" and the project will most likely find out. From the given example it looks like "2fa enabled" for the organisation and a "verified organisation domain (for FSFE)" is two of the checks to fulfill. The domain one you already fulfill, as shown on your verified org, and I guess you have enabled 2fa also already.