I had several S&B cases stick in my Colt AR15. The Wolf was fine until the barrel got thin and did not spin the rounds sufficient. I don't know why, but Wolf lost flight capability before other brands. Eventually, the barrel had to be replaced. I went through about 4K of work ammo, saving some $$300 at the time. I was getting 1K of Wolf for like $125 versus $200 for Federal or Lake City. It was the nasty old green stuff. I hated the smell.
Making change removing stuck cases is nice. Owning a brass rod and doing it yourself is cheap and smart. If people were paying to have this done, they weren't so bright or didn't bother with the right gear. If they paid more than a brass rod would cost for the repair, they were not smart at all. If they did it more than once, they were clueless. A brass cleaning rod works nice, but you can get a cheaper solid rod from the hobby shop.
As for extactors, to my knowledge, the M1A isn't an AR15. What happens on the M1A isn't relevant. I have seen guns break using "good" ammo. When it happens at a low round count, it is usually a defective part. When it happens at an ammo change, it may be the part is stress or the ammo. I take it the M1A guy probably improperly diagnosed the problem as the ammo and didn't shoot it again. It may have been the ammo, but without following up, who would know for sure.
As for those who claim the steel is hard on the extractor, you can buy a couple with each case of Wolf and still save money. You can buy a new Bushmaster Bolt and carrier, all the parts, with savings from the purchase of 2-3 cases. If you like it for what you shoot and it works in your gun, you would almost be stupid NOT to shoot Wolf for plinking and play.
How does the new ammo smell?