That the US and her defense contractors see this and are very busy developing solutions against this very potent threat against their own ships. Since the rest of the Wold als sees this.. and that includes some people/groups/countries that might want to sink some American ships. If anything this shows how dangerous Iran could make the Persian gulf for American ships.
Magura proves how vulnerable ships can be, especially against modern wolf packs.
So I hypothesize that they will come up with some form of "after market" installable Close In Weapon System (aka.. a bolt on CIWS) to deal with these kind of threats.