I too would appreciate seeing "real" data that supports irongoat's claim. Empirical evidence is good when the masses contribute to the subject. One man's empirical evidence does not support what's going on in the rest of the world. As such, irongoat's claim, in my opinion should be dismissed until proven otherwise.
I've also run Rotella T 15W40 and 10W30 in all of my very numerous four stroke machines from high performance motorcycles to lowly, ancient rototiller engines. I've used it for close to ten years in engines known to have plastic components (Hondas in particular). No issues so far.
From my experience, I've learned that there are certain people who manage to sift out the most obscure and irrelevant pieces of "theoretical" information and try to manipulate it into mainstream reality. Despite their apparent ability to ferret out this data, it seems that it is often misunderstood and pushed to the forefront of their reasoning. Not unusual for participants with extreme OCD issues. Not saying that is the case. Just relating from personal experiences interacting with these personality types.