I try to explain in this comment[0]. I agree that this is unethical behavior, but we need to also be aware of what pressures are encouraging this behavior. I also think Ken is romanticizing the standards of science a bit here. This would be great, but it is not what happens in practice. Unfortunately. Mostly unintentionally, but there is intentional ones too.
[0] https://news.ycombinator.com/item?id=36922708