Well, sure, but I don't know if you're picking up what I'm putting down. A shooter who's spent more than three months in any given school building knows far, far more than what any diagram can give him.
No insider needs this kind of thing. I can only see how it might be useful for people who are NOT in the building every day. I'm sure no potential school shooter who is a member of that school community is going to make a go-nogo decision based on this one interactive diagram. For outsider shooters, it's not hard to gain access to school buildings. Just show up for a basketball game and wander the halls, "looking for a bathroom." Recon is not a problem in schools, which is one of the reasons they're soft targets.
I guess I'm saying the benefits outweigh the harms, to me. Though not at any cost; I'm still not sure how much they shelled out for this thing.