Conceptual Risk is different for everyone!
It depends on so many factors, that it is a little rich to sit at one's computer and 'poo-poo' the actions in the picture without knowing the exact extent of the factors (pilot experience, cost and rewards of other methods of operation, stability of platform, wind direction and strength etc..etc..
Risk = Probability of Loss X Severity of Loss / Rewards
As most of those factors are subjective, it is futile here to argue the relative riskiness of this operation.
Here's some bedtime reading:
http://www.risktaking.co.uk/concepts.htm
cl12pv2s
if you look at the hose and his relaxed hip-slumped pose it's clear that he having a wee into the tank
Are we sure this is a 'he'. I thought is was a lass.