It isn't whataboutism if it's directly relevant to the point at hand (as opposed to attempting to distract from it). The question posed effectively amounted to "why is this particularly noteworthy compared to everything else of a vaguely similar nature that's been going on".
I know you are trying to make some point for your political team but if you look up what a fiduciary is then you will see why this would be a good thing and a way to avoid other legal issues. But I know, OMB and all that!