"...and the new maintainer can't be bothered to check whether his new version has actually solved any of the known problems that existed in the previous version"
It's even worse than that:
- The new version might have new bugs that the old version didn't have.
- The new version might not have all the features you've come to depend on in the old version.
- The new version might have APIs or syntax that are not compatible with the old version.
