I would appreciate if someone could help me understand why some cameras are not being announced.
I will add examples here.

My guess is that it is somehow related to #2693.

Case 1

I'm here now: Speed Camera. Click this link om://84GVpz4OLZ/Speed_Camera or this one https://omaps.app/84GVpz4OLZ/Speed_Camera to see the place on the map.

48.10805° N, 16.32057° E

Case 2

48.24137° N, 16.37230° E

Edit: This camera is actually announced but in the wrong direction! It monitors the traffic coming from North-West, not South-East.

This route file can be used to simulate driving through the zone of this camera.