Do you have any evidence of harassment or doxxing? You come off as very aggressive in your comments, but that’s understandable if you’ve actually been harassed.

I think this could have been avoided entirely if you had given a shoutout to OP. It doesn’t seem like you copied their code, but it does seem like you were inspired by their idea. Open-source software is built on collaboration and recognition. Give credit where credit is due, even if it’s just a small credit.