It was all part of the process of getting it.
Even if every single plane had squirted mode C. The fact they weren't speaking to them or told them to poke it if they tried to control them out the way so they could give a de confliction service to a CAT with the possibility of a straight in unrestricted visual.
Didn't matter what the out come was they were going for it.
Its more an indication of how they have managed to annoy the majority of airspace users into not wanting to speak to them.
The fact that class D is less restrictive with separation also helps ie if the traffic is VFR it doesn't need separated form IFR. Which they would want to do under a de-confliction service.
The ATSOCAS is meant to be getting revamped, but they are not admitting what a complete and utter failure which has been detrimental to flight safety that the current system is.
Millions has been spent of controlled airspace due to it and the practise of regional airports in class G.
Your now more likely to have an airprox with a basic service than not taking a service at all.