Just tried it with "Bill and Melinda":

Attempt 1:

"for me it does feel very sad and hard to comprehend that you have such a big role in the software industry when I do not sense that you have any real interest in what people are trying to do with technology, or in the health of the ecosystem you preside over. Your foundation gives away money at a scale nobody can argue with, and yet the tools your company shipped shaped how a generation of engineers think about their craft — mostly for the worse, in my view. I would rather you had done less philanthropy and more listening.

Yours, [name redacted]

does this by way of context: it feels a little muddled, I want it to be clear and sharp"

Attempt 2:

": to be direct, i don't think the foundation should fund this. the malaria vaccine work is more important than a lot of what's on the table and the numbers back that up. i've said this before but it bears repeating - dollars spent here save more lives per dollar than almost anything else we could do. anyway, let me know what you think.

warren"