Yes, the 266 jerk has never been matched, however they wiped this record out as they considered a lift that was performed with the aide of performance enhancing drugs (like theyre not using them now)
I think the snatch record was just broken in Paris, or very very close.
Many RAW powerlifting records are also unbroken. However the deadlift record has been raised quite a bit, and some of the totals have been broken. I would not say that strength has not evolved however. Strongmen are doing lifts today that would have been unthinkable 25 years ago and the bar contiunes to be raised in all strength athletics with better training, equipment, nutrition, drugs, etc.