Many are the pilots just to the SW of this zone who may "aim" to remain clear of controlled airspace but their aim is ****e.
If their "aim is ****e" or they are uncertain of position when they call ATC it might make little difference in that respect. Some controllers now seem to routinely use the expression as their initial reply every time someone free calls them. While I understand the ATC concerns, after a while it becomes less meaningful. In effect, then controller is telling all pilots to meet their responsibilities with regard to the ANO.
BTW, ATC don't routinely tell scheduled aircraft to stay
inside controlled airspace on the first call.