Well, I'm assuming you're young and naive, so I will give you some slack. You will look back on the article you wrote in a couple of years and want it buried due to embarrassment (just thinking about it now is pretty cringe inducing for me as I'm typing this).

Mixing business with politics is a mistake and will severely limit your future chances at getting a serious investor. Not to mention your intolerant and abrasive attitude pushes most people away.

This may work in a forum like HN or Reddit where you can downvote someone and make them disappear. But in the actual world, you need to work together with people that you absolutely disagree with politically.

I think you are also mistaken about the power-dynamic. You need to give them a good reason to invest in your company and they really don't owe you any explanation...and accusing them of discrimination? It's the kind of libel that goes on every day on social media and is the essence of what's wrong with our society today.