Sorry, but that just not an acceptable response to a rejection. Startup accelerators do not exist to empower women founders, make the world a better place or other such grand idea, they exists to make money and you failed to convince one such accelerator that you can make money for them. It's as simple as that. Biases might affect their decision process, but that's a problem for their business, not yours.
Edit: here's the thread https://news.ycombinator.com/item?id=34267515