I see from your post, Final 3 Greens, that I'm not being over cynical after all! I assume rightly or wrongly that your post reflects what you think should happen?
I've flew my Swallow glider in cloud years ago, had no problems (even without training "there is a world of difference between gliders and powered aircraft"), and considered the risk was tiny then and now. I consider the risk of collision far higher in an overhead join on a busy day than ever it is between a glider and powered aircraft in cloud outside controlled airspace. But then I'm a realist, not an alarmist
SS