It only works for certain kinds of projects. It makes sense for the icons repo, the contributions are minimal in variance. In the case of large complex codebas

It only works for certain kinds of projects. It makes sense for the icons repo, the contributions are minimal in variance. In the case of large complex codebase though, the change is something that you will have to maintain going forward. The committer will have attained their goal of introducing a change they wanted and may not be around to deal with issues arising from that new feature. That's been my observation so far across many repos. Having a maintainer that chooses to accept or deny something is vital imo.