A preprint will still give less value to the negative result. No peer review (being a broken system or not) and not being published in a "proper" journal will m

A preprint will still give less value to the negative result. No peer review (being a broken system or not) and not being published in a "proper" journal will make it less likely that the results will be recognised / accepted. The whole point is, that a negative result can have as much value as a positive one...