So you don't like the idea, you're not sure why, you've asked people who do know, and you think better not, but maybe 'green' issues should come into it? I see.
Do you think alleged pollution from a few tonnes will make bugger all difference? Don't you think the big producers burn off a thousand times that every day? What about all the cars pumping out hydrocarbons? Given that nobody in Berlin would have suffered in any way from dumping above 6000' or even said 'was ist das funny gasolino smell?', absolutely no hydrocarbons would have reached the ground there, it was necessary to carry out an emergency landing.......what is there not to like?