Generally, it's possible to have data which is not corrupted but which is logically inconsistent (incorrect).
Imagine that a directory ZAP has an entry that points to a bogus object ID.
That would be an example.
The ZAP block is intact but its content is inconsistent.
Such things can only happen through a logical bug in ZFS itself, not through some external force.
But bugs do happen.
If your search through OpenZFS bugs you will find multiple instances.
Things like leaking objects or space, etc.
That's why zdb now has support for some consistency checking (bit not for repairs).
Even RDIMM / LRDIMM prices have recently started going up.
And I thought that those would be safe, because neither "big AI" nor regular consumers need them.
I remember it as borsch with nettle.
Nettle was one of the first green things in the spring, just after snow melted.
Nettle borsch was cooked just like the regular one but with nettle instead of cabbage.