The real issue with the warrants isn't 'equating'. It's the political point to cover two deeper issues:

First, that Biden admin and others can't escape culpability for any such claim if it's considered credible. Second, the dubious factual basis (trucks were allowed in all the time; temporary port and air supply obviously with Israel's approval; the very low malnutrition death count according to Gaza health ministry's own reports).

The first made the admin's reply inevitable. The second made it even more likely, but it's a too complex point for PR I guess, so they went with 'equating'.