Submarines rule the seas. We did that back in the 1980’s when I was a submarine sonar tech. The war games were so one sided.
Also you don't send a CVBG into waters that are not 100% sanitized i.e. every sub accounted for. this may restrict the CVBG making it a tactical victory for the bad guys. It is a probability game, maybe you go in 80% possub waters if the mission is that important.