I get that issue, but it seems overblown in the sense a kid would have had to have really overloaded in an area in HS to get that far off course.
Most UG degrees are less than 130 credit hours right? So with the distance between that and 150 hours a kid would have had to have taken more than 7 classes in HS for college credit that wouldn’t count toward a degree. From where I am sitting, even though my kid has about every AP available to him, it would still be pretty hard for him to do.
If you conquer most of the APs, it seems like you will inevitably be covering the gen ed requirements at most schools. More typically you would end up with a few (two or three) extra social science courses than you need. Two or three though, not more than seven.