I was contemplating a PR with original license, but your course of action is much better.
I guess this is grounds for a valid DMCA take down? They are obviously breaking license agreement, effectively stealing copyrighted software.
It looks like Jeff Wilcox who seems to be in a decision making position about this has addressed this (on Christmas no less), and I think whilst this is bad and definitely violating, I don’t think there was any ill intent, and I hope we can all put the pitchforks down for a while.