Because people make them and people make them for profit. incentives make the product what it is.
an LLM just needs to return something that is good enough for average person confidently to make money. if an LLM said "I don't know" more often it would make less money. because for the user this is means the thing they pay for failed at its job.
an LLM just needs to return something that is good enough for average person confidently to make money. if an LLM said "I don't know" more often it would make less money. because for the user this is means the thing they pay for failed at its job.