From my experience where I almost needed an RV return (described earlier in this thread), RV return did not require hospitalization or medical evacuation, only that a doctor write a letter on their or hospital letterhead stating for medical reasons, the driver could not drive their vehicle home.
The Travel Assist staff person gave me the specific wording required.
I did not think Travel Assist would pay for my husband or me to travel home ourselves, such as flying home, so we would have paid for that.
Based on the plan document wording, the medical evacuation portion does seem to require the need for transfer to a medical facility that can provide the necessary level of care or hospitalization for medically necessary repatriation.