(I don't really know how to phrase this argument cleanly, help and suggestions welcome, I'm just trying to retranscribe my general feeling of "I don't even know enough to answer, and I suspect neither to most people here")
I would phrase it as holding off judgement until we hear further information, i.e. SI's response to this. And in addition to the reasons you give, not deciding who's right ahead of time helps us avoid becoming attached to one side.
I think what's needed isn't further information as much as better intuitions, and getting those isn't just a matter of reading SIAI's response.
A bit like if there's a big public disagreement between two primatologists that spent years working with chimps in Africa, about the best way to take a toy from a chimp without your arm getting ripped off. At least one of the primatologists is wrong, but even after hearing all of their arguments, a member of the uninformed public can't really decide between them, because there positions are based on a bunch of intu...
I was wondering - what fraction of people here agree with Holden's advice regarding donations, and his arguments? What fraction assumes there is a good chance he is essentially correct? What fraction finds it necessary to determine whenever Holden is essentially correct in his assessment, before working on counter argumentation, acknowledging that such investigation should be able to result in dissolution or suspension of SI?
It would seem to me, from the response, that the chosen course of action is to try to improve the presentation of the argument, rather than to try to verify truth values of the assertions (with the non-negligible likelihood of assertions being found false instead). This strikes me as very odd stance.
Ultimately: why SI seems certain that it has badly presented some valid reasoning, rather than tried to present some invalid reasoning?
edit: I am interested in knowing why people agree/disagree with Holden, and what likehood they give to him being essentially correct, rather than a number or a ratio (that would be subject to selection bias).