The article mentions issues with the 900-series drives. It seems like the 800-series are still rock solid (also been running them for s few years now without issue)

Unfortunately there have been recent issues with the 870 EVO series also: https://www.techpowerup.com/forums/threads/samsung-870-evo-b...

There may be multiple, different issues with Samsung parts at play here. The 900 series issues seem to have been addressed with a f/w update; the 870 EVO issues were - allegedly - caused by bad NAND and the devices needed to be replaced.

ofc part of the problem here is the lack of public acknowledgement / information from Samsung on these issues.

Similarly my M.2 NVMe 950 pro has been in an always on machine that gets a ton of use since 2016.

The parent posts mentioned 970 and 980, not 850.