Here is my 2 cents, worth even less. I have dumped heavy iron manifolds, risers, etc on existing shipwrecks. I used to do it every 4 years, when this iron needed to be replaced. I dove those wrecks and see that heavy metal becomes great (safe) small fish habitats. Ships, military tanks, aerojacks make good debris (after cleanup).
On the other hand. Items like thin, light, large metal items have no value out there. Aircraft, car tires (even bundled), and other light stuff, shown to be not good.
I can't image this SS tank will go away anytime soon, simply will roll around, and is a habitat liability and is simply junk if seen by a diver. So, I vote no.