Even if "what a white man would do" wasn't emotionally charged (and it is), it's not a good way to make the point.
Look at how often people tweak, clarify, and edit their comments even here on hacker news. So you'll probably just end up with "stifled" advice (using the terminology from the article), as you can see with all these suggestions in this thread.
Are they implying white men are smarter/better so they always take the right decisions? If that's what they're doing, they're also implying, in this case, she, as a black woman, is not as smart as a white man.
I'm a white man surrounded by mostly white people working on a field with mostly white men and I can't say what a white man would do in certain situations because we're all different and we all think differently.
If I was giving advice to someone who was too assertive and taking too much credit, I would never say "Think about what a black woman would do." Things like this are so transparently racist it shouldn't even need to be explained. You are simultaneously characterizing a race and gender of people and also telling someone else to act like a different race and gender.
The reason the advice was poorly received is because it is nonsense. The recipient of the advice asked the perfect question - "what does it mean to act like a white man?" The OP, when asked, also doesn't seem to know what it means. I'd say there is a lesson there - don't repeat something just because it was will received when you originally heard it. You may not understand it. It may be something of an emperor's new clothes situation where nobody can question the person who gave the original advice, but that doesn't make it good.
Why not just say what you mean without the racial stereotypes?
"Graceful interpretation" does not mean that you ignore the advice and substitute for it what would have been good advice.
> Why not just say what you mean without the racial stereotypes?
Nothing is going to win cheap applause at a diversity panel than saying "white man bad".
That it is unclear is obvious in that the person using the stereotype couldn't identify the concrete, actionable behavior they intended to encourage when directly questioned.
I suffer a bit from imposter syndrome, so I completely get what the GP is getting at, it was just phrased ambiguously.
Here is a disambiguated version: "Imagine what a privileged, entitled, overconfident, upper-midlle-class cishet white dude would do, and do that."
When you speak, people pay attention! Comic books pander to your adolescent fantasies! Your doohickey is the greatest thing since sliced bread! In fact, it's the greatest thing since unsliced bread! You're a frickin genius for dreaming it up! Your LoMoSo strategy is going to make billions for you, the few early employees that don't quit, and the VC that you choose to let invest! You're making the world a better place through scalable fault-tolerant distributed databases with asset transactions! The world is your oyster, and everyone who laughed at you in high school is going to be sorry! Bwahahaha!
Er, ahem. Pardon, got just a little carried away there.
Anyhoo... that advice has nothing to do with capability, talents, skills, or accomplishments, and everything to do with self-promotion and attitude. If you don't toot your own horn, who will?
Saying that white men are confident and black women aren't is simultaneous bi-directional racism. You are generalizing white men and black women AND telling black women to act more white?