Is this mac disk written ok?

Unsafe shutdowns are nothing to worry about . . . certainly 24 in 32 TB of writing is not much.

I would be more concerned with the 32 TB written as that is quite high for one year. I reckon 10 TB per year is more like what most people will average though it depends on the apps and browsing that you do.

As 3% is used you should theoretically get another 30 years out of the machine though the 3% figure looks as though it is estimating the lifetime to be 1 PB (1,000 TB) which is rather high for a 256 GB SSD.

Most authorities would estimate around 150 - 300 TB which would put the lifespan around 5 - 10 years.

I am wondering whether you have written 32 TB or is there some process secretly writing large amounts in the background. A year or so ago I had Spotlight and its minions secretly writing up to 100 GB per day until I disabled it. That would have brought my usage up to 30+ GB per year if I hadn't disabled it. Incidentally, although it was writing 100 GB per day it never showed up on the SSD. It was as though it was written and instantly deleted.

You can check what is writing to your disk by using Activity Monitor.

The Data Written etc. is measured from your last boot. Mine was just over 21 hours ago.