Not saying offensive things loudly is a good start, but if you want to maximize being a decent human being you should also not discriminate against women quietly -- or at all.
Specifically, you use the word "bad things to say". Are you arguing that they are incorrect? Or are you simply arguing that they are correct, but admitting their correctness somehow makes you a bad person?
If VCs are obligated to make suboptimal investment decisions (e.g., investing in founders who are less dedicated to the company but have breasts), who else is? Is Joe 401k also a bad human being if he attempts to maximize his returns and doesn't throw his money after feel-good causes?
I've never met a good programmer who liked office politics. We might laugh at the Foosball table, but it's a secret indicator hinting the workplace is low on office politics.
I would be richer if I stole all your stuff, sold it on eBay, and executed a cunning cover-up to make it look like you destroyed it yourself in a failed attempt at insurance fraud.
That's a true fact. How would you feel if I seriously proposed it at a business meeting? Being an asshole does not magically become okay if it makes you more money.
Now you're getting the idea.
I will think much less of someone who is sexist, whether they express those views softly or loudly. If you can't see why, I'm afraid I don't know what else to say.
That will enable you to go beyond repeating slogans and implying those who disagree with you are assholes while completely dodging their questions.
Discriminating against someone based on their gender is both wrong and, in my opinion, based on fundamentally incorrect assumptions and flawed logic.
I'm fine with disagreement, but I do feel like most misogynists are assholes, yes.
(And if Joe 401k went through his portfolio and divested from female-run or minority-run businesses because he thinks people in those groups are worse leaders, then that suggests to me he might be an asshole, yes.)
The profit maximizing way for him to move forward is to quietly take the possibility of pregnancy into account with future investments.