Wolf hybrids are a completely different story and should not exist.
I've had three Timber Shepards, all were great, no problems. Best hunting dogs I ever seen, unbelievable noses. Smart and protective at all times, never unruly, always gave plenty of warning growls.
Of course, I lived in the middle of nowhere, always knew where they were and I outweighed them, (one was 186 pounds), so I could handle them.
Your statement is a little too blanket for me.