I'm not peddling theories, I'm raising honest questions that I hope rational minds on HN can challenge me on. Peddling hate won't convince me. :)

I'll assume for a second that you're Indian... let's say your brother were to become Muslim tomorrow. Would he be any less Indian after the fact? Or any less your brother? No he wouldn't. Muslims in India aren't Arabs who invaded and settled, they're Indians who converted. Go back far enough and you probably have a common, Indian ancestor with most of them.