I don’t think the third question is a good faith question.
This is the context for how Wenar used the phrase: “And he’s accountable to the people there—in the way all of us are accountable to the real, flesh-and-blood humans we love.”″
I interpret this as “direct interaction with individuals you are helping ensures accountability, i.e, they have a mechanism to object to and stop what you are doing”. This contrasts with aid programs delivered by hierarchical organisations where locals cannot interact with decision makers, so cannot effectively oppose programs they do not want, eg—the deworming incident where parents were angry.
“Most charities seem much less effective than the most effective for-profit organizations, and most of the good in the world seems achieved by for-profit companies.”
I disagree but even I did agree, per dollar of investment, I think the best charities far outpeform the best for-profit companies in terms of social impact, and we can do a reasonable job of identifying the best charities, such that donating a lot of money to these charities should be seen as a necessary component of being EA-aligned if you’re rich.