I think it will lead to a fair report. MIT may or may not act.
I have independent access to most of the relevant information (but haven't looked, since it would make it harder to speak publicly without potentially disclosing sensitive information), so it'll be easy to tell if the report is fake. And I suspect there are a lot of people at MIT who have access to information, and would be more than likely to call it out. And Abelson is a particularly ethically-conscious individual, so the only way I'd really be concerned is if he resigns the position partway through.
If there's a report, it will be pretty clear if it's comprehensive. MIT may or may not act based on the report, but it will at least be obvious.