Aircraft Proximity report

[zonoma]

Are pilots losing faith in TCAS or even ATC as a result of all these incidents?? I ask as the usual night time short cuts we ATCers are happy to comply with, seem to be getting turned down recently as soon as the 'outside CAS it'll be a RAS' is added. Its very unusual for this to happen as in my experiences a/c are not descended below FL100, and its officially night time, so if anything is out there it has to display Mode A AND C and will normally be in contact with an ATC unit somewhere. Even if its not our unit we can decifer from the Squalk which it is and then communicate accordingly. Have airlines imposed any restrictions concerning this because it baffled me when one after another turned down the short cut