The data should eventually become public. And regardless of if DHS is hacked (and lets be honest this is probably going to be kept in Excel somewhere), advanced

The data should eventually become public. And regardless of if DHS is hacked (and lets be honest this is probably going to be kept in Excel somewhere), advanced actors like state-sponsored groups already know who they're hacking and already sell or trade access when it suits them. The public finding out how badly most "critical" companies are at security and integrity is really the best thing that can happen.