Because they can only generate something that looks LIKE the thing.
Generating a cat that looks LIKE a cat is fine because there are differences between cats.
The problem is that you can't make something that looks LIKE a letter K, it needs to satisfy the rules of K and can't just look LIKE a K and not some made up character.
They're LIKE generators and have trouble with the bits that need to be exact.
The asker didn't ask for a very scientific answer. They've come across a limitation and are asking why. Any answer is still an answer, sorry if it didn't match your criteria.
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Because they can only generate something that looks LIKE the thing.
Generating a cat that looks LIKE a cat is fine because there are differences between cats.
The problem is that you can't make something that looks LIKE a letter K, it needs to satisfy the rules of K and can't just look LIKE a K and not some made up character.
They're LIKE generators and have trouble with the bits that need to be exact.
there are several fonts on the market that would profoundly disagree with this.
Sorry, but this is not a very scientific answer.
The asker didn't ask for a very scientific answer. They've come across a limitation and are asking why. Any answer is still an answer, sorry if it didn't match your criteria.