BTW, a colleague of mine told me that GitHub Actions wasn't supposed to be a CI/CD alternative at the time when it was released. I couldn't find any note on that online. Is it true?
Not sure what you mean by that, what was it supposed to be then?
The protocol that Actions runners use to report logs/job statuses back to Gitea is an open protocol that maybe one day woodpecker could use it for enhanced integration with Gitea, so you could use woodpecker but have the experience be next to your code.
Disclaimer: I am listed as a maintainer of Woodpecker. I am a also part of the Gitea TOC, and am employed to work on Gitea