Please don't derail the thread with this accusation, you're not helping. Stick to the topic at hand (the license being willfully violated) and don't speculate.
Gosh, how long did it take you to type that long reply explaining you're too busy to copy a license file over to kbin? It takes less than a minute to do. Copy the file. Commit. That's it.
You're shifting the blame. Ernest promised a quick resolution 2 months ago and didn't follow through. I don't use kbin, I only use Postmill, so expecting me to clean up his mess isn't a reasonable ask.
It would take him less time to copy/paste the license file than it took him to write his latest feet-dragging comment here.
May I ask why you haven't added the copyright notice to make kbin compliant while your volunteers are in the process of eliminating all of Postmill's code from the code base?
"Inspired" is not an honest term. You're using someone else's code, so abide by the license they use, or remove their code from your project until you're ready to follow the license. You started lifting Postmill's code several years ago now and have had sooo much time to set things right but keep dragging your feet.
This isn't a school project, you're gaining financially from someone else's hard work without abiding by their (incredibly permissive) FOSS license and opening yourself up to serious legal action.
It really is ridiculous. It's such a small ask to give credit where it's due.