Counties have done unethical experiments on humans before, and maybe they do it now. Why should we hold ourselves to a standard, if other groups do not? I couldn't possibly think of a reason why the scientific community would hold themselves accountable, rather than think they know best and act as if they were superior to the larger community they work to improve. I mean, that mindset has never gone wrong.
Personally, I like seeing a community doing some attempt at self regulation. Maybe it's not perfect, but it's better than nothing.
Why not? That's how we got vaccines, isn't it? (Stated completely without any ironic intent.)