When it was $3.86 a box, I bought 5,000 rounds of it at Academy. I am about half way through that lot, mostly in an STI Trojan. No problems, nor do I worry about it.
If 30-40,000 rounds would wear out an extractor, I can replace it for a lot less than I would have spent on brass cased ammo.
I still reload 9mm because I like to reload, however, where I shoot mostly is a field with knee high growth. I do not worry about abandoning my aluminum cases out there. I guess I could recover them, but am too lazy to do so. On a hard surface, I recover ALL my brass cases.
This really never got to be an issue until the advent of the errornet and BS being spread at the speed of light.