Do you have a citation for the neurological disease statement? I follow this field and I have not heard that.
It is honestly very hard to know about this kind of thing, because the results can vary based on how the analysis is done. But there is a severe publication bias effect in the sense that authors who see the clock giving a less than clean "story" tend to double and triple check their work and ultimately rarely to publish.
I have seen data going both ways on clock-disease associations, published and unpublished, so I do not know what the truth is, only enough to caution HN readers that a robust clock-disease association should not be taken as established truth.