Well I think Strava should ban all motors or have a segment as different as running vs cycling and then allow cars, motor cycles etc.
That is a motor bike (as it is) and rather obvious it does not belong. But there is no enforcement on Strava unless riders flag it. If it continues, the user should get their account suspended. If Strava allows much of this, it will be the end of subscriptions.

As to cheating being special human powered bikes, or dopers they pretty much stated that is OK.