This would carry more weight if it was a principle that Cummings championed in government - as Sonia Khan would probably testify. One person's openness is another person's leak. But suspect he's right in general about transparency.
14/ I can think of no significant element of covid response that wd not have been improved by discarding secrecy and opening up. This was symbolised by e.g how COBR cd not be used: a constrained STRAP environment cd not cope with the scale/speed, another important lesson