How does one persist when there are a lot of naysayers around?
Building any product/company is hard. For various reasons. Sometimes founders/makers/creators are flowing against the tide. They have a vision that no one else either understands or refuse to accept due to some personal/political agenda. In such environment how does one persist and continue to follow the dream? BTW, not all dreams start with the idea of building a unicorn. Lot of them start because someone in the world has a vision for a better tomorrow.
Find your yaysayers. Prioritize for impact. Get feedback. I believe in you. Also this doesn't work for all things but try to find a way to make it profitable. Then you can build a positive feedback loop.
From what I briefly read it looks similar to Lambda School. They are definitely for profit. I'm a skeptic of that approach to education reform but you could try emulating what they are doing with your own differentiators.