You seem to think he's competing with you.
He's not trying to beat you in any way shape or form. He's releasing add-ons he created due to demand. People support him because he has high quality and isn't a complete starfish.
Why do you think he's done something wrong? He's released an add-on. There was no "HAHA PANDAN TAKE THAT YOU forget", or "IM GONNA RELEASE THIS JUST TO SPITE PANDAN", he just released it. Why are you getting so worked up over it?
The correct thing to do would be to make yours better than his instead of trying to spread hatred against someone who hasn't done anything.
You act like you deserve something that he hasn't given you because you say you reminded him of an idea.
Let me remind you that there were several topics in suggestions and requests for a riot shield. How are his actions wrong?

Make the top center half of each color, I applaud your efforts though.