I don't think the comparison to GitLab is reasonable: Gitlab brings a much broader feature set and has a much larger product vision https://about.gitlab.com/direction/maturity/ I'm mostly missing a native CI-support.
I do agree, that most "simply a GitHub-like web frontend for Git"-purposes Gitea sounds like a really awesome deal if simplicity and functionality. Looking at https://docs.gitea.io/en-us/comparison/ is really an impressive list.