It's not intended to be just a list of domains. It's intended to be called as a Python library (hence the aforementioned PSF member tending it) by actors who wa

It's not intended to be just a list of domains. It's intended to be called as a Python library (hence the aforementioned PSF member tending it) by actors who want to prevent user registrations on their platforms by users of disposable email domains. This much is obvious by spending less than five seconds reading the README plastered on the front of repo. You're also welcome to peruse some of the PRs and issues in the repository if the README wasn't clear enough. In fact, go visit the last comment in the PR I linked: a contributor points to a Hacker News comment for reasoning why operators might want to make use of this blocklist. I'm sorry, but yes it is related as the operators of repositories like this (and there are others) are deaf to the reasons why users make use of these disposable mail domains. That reason is because breaches like this happen daily and these breaches are a threat both to the public IDs we use for emails and to the private passwords we use, should they be poorly secured.