the license changes were made to deter parties who had violated the previous license [GPL] by not attributing the work and stripping copyright information
That is a violation of the GPL. Changing the license isn’t going to stop license violations. It’s really unfortunate when software gets into legal hell.
That is a violation of the GPL. Changing the license isn’t going to stop license violations. It’s really unfortunate when software gets into legal hell.
no it isn’t. The old versions are still GPL. permission from contributors was attained.