This is about the ATC Playground server. I think that the “Ground controller” is taken for granted as all you have to do is allow pushbacks and guide an aeroplane to any active runway while you simultaneously run the tower. This doesn’t work out in all airports.
I think this especially happens in KNUC San Clemente where there is only one main taxiway. I’m not going to name names of controllers but it’s obvious when they show no attention to ground and only tower. For example:
A common problem is when an aircraft lands in one direction and requests to taxi to parking and another aircraft is taxing to the opposite end of the runway. If the controller is not watching then the two aircraft will just pass eachother on the same taxiway (pass through eachother) which is very unrealistic. Instead if the controller was awake then they would have said “hold position” to one of the aeroplanes. Just a tip to controllers to be mindful of ground control as well.