In her case, her gender clearly makes her stand out because men are statistically the overwhelming majority in the field.
Someone who came from a trade school or an underrepresented state might choose to bring these points forward instead, to share their insights with fellow working class founders.
He is not silenced, he can write all he wants on his blog and his ideas are available to the public.
He is labelled a racist because he defends racist views, this is what he actively promotes. It might be against the zeitgeist, but a lot of people "against he zeitgeist" are not labelled racist just for being so.