Steel cased ammo works fine in my Chicom SKS. I've shot several hundred steel cased .22LR with zero problems. I've shot numerous thousands of steel cased 9mm thru my Glocks with little problems. 1K of the old WOLF lacquered 9mm thru one Glock without cleaning and only had a 1% failure to fire. Not bad for plinking ammo. 1K of S&B Range Safe steel cased 9mm with zero problems (literally the BEST steel cased 9mm one can buy).

Zero problems with WOLF .380 thru my CZ-83, same with steel cased 9x18Mak in my CZ-82.

Some guns can handle steel case ammo, others can't. As for broken extractors, when people break an extractor on brass cased ammo, do they blame the brass case and exclaim: "This is junk ammo and I'll never use brass cased ammo ever again!"? I guess some people need to blame something when things go wrong...