Agree with West Coast. This trajedy is not an indictment on the war, the B-1, or the the crews in the air and on the ground. Things can and will go wrong, and we learn.
CAS has evolved and has come a long way from "drop 50 meters west of my smoke".
Agree that slower movers are sometimes best for troops in contact support, but we do not have those aircraft in direct support of every ground operation, or they can not get there in time for urgent retasking. The B-1 is not just a strategic platform, it has demonstrated it's ability to work with troops on the ground. Is it the best for every scenario? No. The B-1 also has tremendous time on station capability that other aircraft do not have.