April fools in July

Certainly not a kick! I'm sure you have seen it on some sites but as you don't visit club sites, and certainly not service pitches where BB posted it happens. it's rare event for me. I can say I never have seen it on the numerous SP I've been on, far easier to turn the tap off a few hours before leaving and it 'empties itself'.

If one has to do that just use the handle rather than a foot?

Also not a particularly good thing to do, spilling 20 litres of water into the actual pitch area which in a SP is usually a hard standing, and apart a waste as well. 

I'm not at all sure what you're on about with photos as I never mentioned that at all?

Still  each to their own, and no neither would I.

CS it is not something I do my self, but we have used club sites often in the past, although certainly not this year, and have seen it done on all types of pitches, grass, H/S and sercviced. Not all that use the latter connect up to the mains water, as you well know, and do use an aquaroll. A number appears to have very little idea of how much water they require and subsequently end up with partially full aquarolls which require emptying prior to departure and the easiest way for them is to dump the excess water on the pitch and not bother disposing of it in a reasonable way.