It goes to what kind of company and site you want to have. If all you have is 20-something tech bros then that's the kind of company and site you will have.
If you want to appeal beyond that, you may want to broaden your culture.
Sometimes the founding cultural DNA is too strong, or attempts to change the culture fall short for a variety of reasons.
No, but if your monoculture of tech-bros has not had to deal with half the internet shit that women and people of color do (Or have, for various reasons, not been deeply impacted by it,) then what you're going to get is a community where women and people of color are driven away.
I've never been stalked on the internet. I've never received threatening phone calls. I've never been personally harassed, or physically threatened. If by some happenstance, one or two people did any of the above, I'd probably laugh it off.
A company full of people like me is unlikely to consider those use cases as seriously as they should.
Luckily a company full of people like you will also need to have experienced marketing and legal staff, who will know that it would be unwise to laugh off such user issues. Your marketing team doesn't need to be diverse to know this.
If you want to appeal beyond that, you may want to broaden your culture.
Sometimes the founding cultural DNA is too strong, or attempts to change the culture fall short for a variety of reasons.