Your crusade against the story is all well and good but somewhat beside the point. Do you have any evidence that either Dr. Laura or her son have taken the opportunity to issue a firm and angry categorical denial?
The only thing I can offer is that Dr. Laura probably has a powerful legal team and they probably told her to say nothing. Has this boy been discharged? Has he been brought up on charges? Rape, torture, and child molestation? Gee, maybe he has amnesia and forget that his mom is a highly controversial public figure. Now, who would want to smear Dr. Laura using her 21 yr. old Army soldier son? Hmmm?