free/libre != Do what you want Copying and redistributing software without a license IS the definition of software piracy. The current version appears to be M

free/libre != Do what you want Copying and redistributing software without a license IS the definition of software piracy. The current version appears to be MIT licensed. It is safe to assume that the fork was made under the same license. Given this assumption, and given that the MIT license requires copyright information to be preserved, stripping attribution is a license violation. The claim of piracy is valid.