I don’t disagree, but:
- The few times I left my “approved” stamp on a PR, it felt like it was worthless (to the person merging the PR later). Maybe it wasn’t, but at least I didn’t get any feedback whatsoever that it was helpful. So I stopped doing it.
- Personally, I noticed that I tend to care much more about repositories where I’m a member/maintainer. But maybe that’s just me.