Fair enough and I know they make significant financial contributions to tiger conservation in general. However, on the home front where this pertains to maintaining tigers there is no argument whatsoever to retain or (attempt) to breed hybrid / mutant gene tigers over maintaining and breeding the real wild article. Hence, I and a few others too will continue to be at liberty to disagree. Needless to say, it is sad that a serious conservation zoo feels the need to go to this length …, as pure-bred tiger subspecies are just as impressive, be it all the more significant as all ssp. are endangered …
Out of sheer statistical interest: how many Sumatran tigers are currently held? How many have been bred in recent times? How many Sumatrans have been exchanged within the ZAA region where Dreamworld Sumatrans were involved?
Dreamworld currently has 1.3 according to their website. They last bred pure Sumatrans in 2008 (i'm pretty sure). Within the last five years they have sent one female to Taronga Western Plains Zoo (Indah) and another female to National Zoo and Aquarium (Rahni).