As stated, because both involve sensitive and personal information about people - unlike say, Stable Diffusion which is using AI for creative image creation etc.
> why do lawyers and doctors get it wrong all the time
Because they're human. "Medical error" has been in the top 5 causes of death in the United States for several years. Our legal system is also far from perfect and could use the help - consider systemic biases and wrongly convicted people who spent their lives behind bars unfairly due to human error or bias, omissions of information, etc.
Why do you think technical documentation and medical diagnosis is similar to what judges in courts are doing?
OK, so why do lawyers and doctors get it wrong all the time then, if it does?