My Samsung 990 Pro 2TB has suffered from the reported early aging bug. I have only 4 TB written and S.M.A.R.T reports 4% life used (which should arrive only after 48TB written).
Samsung has just issued a new firmware update, 1B2QJXD7, which I applied in Samsung Magician. My drive still shows 4% used up, so I am hoping that it will just park there until I get to 60 TBW. We shall see.
Seeing the life expectancy plummet is not a comforting feeling. On the positive side, it is a super nice drive performance-wise.