"Hey XXX,and YYY, do you have time for a discussion tomorrow at lunch? I noticed some things that make me think the company could benefit from you two swapping some responsibilities. I've noticed XXX struggles to aaa,for example aaa1, aaa2 and at aaa3, and at aaa4 YYY seemed to feel very comfortable doing aaa despite having less experienced, and conversely I think XXX's experience might be better suited for bbb, because of my experience at CCCC. Happy to share more of my thoughts and get your own opionion on this at lunch"

I actually fail to see how you can respectfully tell someone you think they should swap roles and be sexist. Sure, if your whole argument is that "XXX isn't coming of agressive enough to survive in this boys game" then you might be accused of sexism...for some reason

That's a nice thought, and might work if the person can articulate the differences well enough. But the entire point of the article is that no matter the argument or ability to make it, there is a fear that the woman might claim sexism simply because he suggested she step out of the CEO role and let the other person (a man) have it (reasons be damned). Even if everything was fine among those 3 people, someone else might take to twitter and frame it as sexist - especially if the advice was taken.

And I am calling that fear bullshit. If you cannot articulate the differences, then why are you making the suggestion? A "gut feeling"? Well, then that might be sexist and deserve being called out as BS. And if everything was fine between those 3 people...just clarify things on twitter?

The fear of a hypothetical "someone" taking something "totally reasonable" out of context is, in my experience, held mainly by people who have a private definition of "totally reasonable" not held by the majority and who'd like to continue holding it without consequences.