<<the aircraft will drop out of any stack when it can and make its way towards the approach at whatever altitude the captain decides with ATC. >>
The writer of this gem is, apparently, a QFI. I am surprised at his lack of knowledge.
Well, I suppose that's why I'm airing my ideas here. I don't know much about controlled airspace, except when I have been forced to use it -- very rarely. That's what the RVCs are for.
And how the rules are laid out and how operators operate are sometimes subtly different.
For instance, I know that I may fly at 2,000ft over an ATZ, or 3,000ft over a MATZ, but to do so without talking to ATC would be poor airmanship and perhaps more than a little dangerous.
So, my point is, that it's just as risky and lacking in airmanship for a large aircraft to fly over a glider site at or just above the top of the launch envelope without knowing where the gliders are flying.