@xianc78 >they wouldn't even USE software licensed under a permissive license. Like nobody realized that you can still use the original version even if there are proprietary forks.
To be honest, a fair amount of pushover licensed software has proprietary components as nothing in the license that stops that, so you pretty much have to check the software itself, check the free software directory (and hope that the submitter got it right), or use software with a license that ensures proprietary components aren't allowed.