No QR is for that situations.
Ditching the kite is the last resort when your life is in danger. (being blown to open see with no way of getting back ,....)
I dont understand that one at all
Holding on to your gear, is the most dangerous solution most often IMO.
If the kite is pulling you towards shore or a pier or similar, after the QR has been engaged - it is extremely dangerous.
If you are a "cheapskate" and think the kite is expensive - and you hold on when surfing at spots where you could be towed around a point so it will be offshore - you can also lose your life especially in cold winter conditions.
As almost every kitesurfer rides quite close to shore - either for flat water and freestyle, or for waves, it will be way safer to ditch the kite and swim ashore.
And even if some kited in offshore wind, or it turned while on the water - I would still ditch the kite and swim ashore, instead of letting me be dragged out to open sea and in REAL danger
So I would say that flyyboyy is very correct, in saying that releasing the leash is EXACTLY for the situation with an out of control kite, no matter what wind direction