Eric already pointed out that OP needs to comply with the license. It was simply ignored. Eric posted again to rescind his support for this project until OP complied with his license. OP responded with (my words) "we're both in a field that's full of scummy actors, so what did you expect? Despite what the license says, I'll open-source it only if I feel like it" (link).

Unfortunately for OP, problems don't go away just because the other party can't be fucked to babysit you on an internet message board.

Thankfully, this community has Dooglus — sleepless watchman, crusader of justice — who has a long history of contributing his time to expose dishonest actors. That's one of the reasons he's laden with trust-clout which was used to annihilate OP's trust-rating and spur him into [slow, begrudging] action.