“The jury, he argued, was essentially allowed to conjure up damning evidence in their minds that may not have existed”
Well yes, that’s exactly what the court will do if they find that you’ve been deleting evidence - they assume that whatever you deleted must have been damning to the case otherwise why would you have told employees to use “delete after 24h” communication channels?
Sounds a lot like what Joel Spolsky was advocating for since 2003, although now it’s easier since most people already have a private office, just not in “the office”.