Piers Morgan won't big them up. He'd go full-on attack asking why the hell are they mucking about during a crisis.
As that appears to be radiology, which has probably had most of it's appointments cancelled to reduce the number of very vulnerable people coming in and potentially catching the virus, they're probably less busy than normal, but still needs to be staffed.
I imagine those that work there alternate between ICU etc and that department to allow a bit of a rest. There is no way anyone could cope mentally with just full-on death/disease, go home, come back and repeat. To work that hard you have to play hard too to give your mind and body the chance to recover.
I do think it was a very silly thing to post it online though. If it helps you unwind great but keep it among yourselves. Otherwise you're just giving the nutcases ammo.