We've made it highly customizable [1]. For some folks, a package that has not been updated for a while could be classified as abandonware. You can turn off the alerts that do not apply to you by commenting out in .packj.yaml file.
We're working on making it similar to email spam. Will post more soon. Meanwhile, we welcome changes that can make it less noisy for the community.
[Edit:] one can specify Github API token to get around rate limiting. We'd deeply appreciate if could create an issue for this on the repo.