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Well if all you wanted to know was the truth the video title has it right there (chopped off from HN title) - M1 Mac SSD Wear Issue Tested and Explored. Yes, it's a problem.

I have YT Premium so without ads I found the video to be informative albeit a little slow paced. He goes through debunking various theories including the smart data being incorrect or misinterpreted.

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What's the truth in the title? It says he tested and explored it. Eh.

Maybe it's a problem on 8GB units (and to that Richie video, my assessment about 8 vs 16 is that 8 shouldn't exist. That just isn't enough memory). On my 16GB device I've written 5TB despite installing all the OS betas, and pounding on XCode 13 betas all day. That puts it at 1% wear. I'm not too concerned.

What is the reason for this? Is there something about M1 that requires lots of data to be written/read from disk? If no, can we not expect that Apple will fix this with a software update?

I believe it's fixed in macOS 11.4... looks like it was a bug that was affecting the data reporting tools.

https://twitter.com/marcan42/status/1396374313591140357?s=21

Guess you didn't see his second video: https://www.youtube.com/watch?v=ZnHgdqU-1ws

The second video is crap too. It's all based on that the diagnostic tools shows the correct values of written data...

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