The -just dump it on the ground- thing should work as posted if there weren't some of the popular RV tank chemicals used. Some of those can be nasty and may kill vegetation.
From what I gather many public dump stations have closed for this reason- some of the chemicals added to control smell made it too difficult to process the "stuff".
From what I gather many public dump stations have closed for this reason- some of the chemicals added to control smell made it too difficult to process the "stuff".