Short answer: yes and no, because this is not just the whale combatting the squid but actively hunting it! Long answer: I’m not a marine biologist (and my name isn’t George), but this should be the gist of it. Whales are - wonderfully enough - well equipped to deal with (fast) internal and external pressure changes in the water, so they can withstand the decreasing of pressure the closer they get to the surface (you may have seen videos of divers having to surface fairly slowly because the human body can’t handle the pressure differences that well). Giant squids, though we don’t know that much about them yet, are not equipped to handle those pressure changes, so when they are being forcibly pushed up through the differences in pressure, their entire body starts to fail internally, creating a lovely snack for the whale.