If the open source software interacts with the data brokers as you, then how would it do that without giving up even more of your personal information? Services like Optery also lose the ability to remove your information from a data broker if you have a direct account with them. So you better hope that open source maintainer doesn't lose interest after a while, since if they do, you'll be permanently doomed to logging into hundreds of broker sites each year to refresh your opt-out.