Is this an actual technical change, or just legal CYA?
I understand the change but it’s also a shame. It’s been a fantastically useful tool for talking through things and educating myself.
Being clear that not all lawyers or doctors (in this example) are experts in every area of medicine and law, and knowing what to know and learn about and ask about is usually a helpful way.
While professionals have bodies for their standards and ethics, like most things it can represent a form of income, and depending on the jurisdiction, profitability.
Modern LLMs are already better than the median doctor diagnostically. Maybe not in certain specialties, but compared to a primary care physician available to the average person, I'd take the LLM any day.