As opposed to what, the US military, or better yet Israel (because we all know they won't be excluded) using that model to drive weaponry that kills people?

Your hypothetical implies that there is a better alternative, but when those models are "restricted", in practice that means that the only people who have access to them are precisely those who can and will use them for the worst kind of shit. So yes, releasing them to the public is a better deal, ethically speaking, at least then the playing field will be slightly more equal.