Then why are all the most anti-ist people dull as dishwater and working in hr? If you have no opinions that mainstream culture finds repulsive then you're not done much thinking.
Or maybe you can have opinions that mainstream culture finds repulsive without being "sexist, or racist, or transphobic, or smell bad".
Just because the US media landscape has split the people into 2 camps engaged in culture war does not mean that most people neatly fit into one of those categories. Many are a combination of both categories, with opinions on one subject matching one camp and another subject matching the other camp. With your comment you are merely repeating stereotypes we already know are just that and therefore inaccurate.
All humans are flawed and we should not use positive traits to justify or excuse negative traits. There is no net total of a persons personality.
Why do you engage in trying to associate the traits you listed with being interesting and their absence with dullness?
Beliefs that are labelled as racism, transphobia, and sexism are often sensible beliefs. Combined with smelling bad, they imply to me in a person a prioritisation of sincere intellectual pursuit over popularity and financial success/social success more generally.
Pretty much every interesting person has at least one proscribed but sensible belief. Sure, it doesn't have to be one of those listed, but it will be socially indistinguishable from them. If you don't allow the expression of such beliefs you lose every interesting person who is in the habbit of speaking his mind.
There's even a pg essay about it: http://www.paulgraham.com/say.html