Hey, this is precisely how not to respond to anyone, ever. I'm sure you think you were responding however respectful as you thought you needed to be, but here are a few things for you to keep in mind:
1) It's my game, so I can have any hubris over it I want. I can make whatever decisions I want for it. You have to work through some things if you think I'm not entitled to make my own decisions on my own game.
2) I frankly don't need your involvement or assistance. You can't "offer" me anything I don't already have access to. I know plenty of wonderful composers, artists, designers, etc myself, to the point that I don't need someone else to do exactly what you're doing. If the point was to bring them on as a composer, I would. That's literally not my goal or motivation with this project, as explained in my last reply to this thread.
3) You're not entitled to anything involving something I put my own time and energy into. Period. There aren't going to be anymore public demos, since the previous one is a decent enough slice of gameplay. There's no need for another. It conveys exactly what I'm going for with this game, and that's the point of a demo.