Edit: Not saying this is the case for the person above, but one thing that might bias these observations is ChatGPT’s memory features.
If you have a chat about the condition after it’s diagnosed, you can’t use the same ChatGPT account to test whether it could have diagnosed the same thing (since the chatGPT account now knows the son has a specific condition).
The memory features are awesome but also sucks at the same time. I feel myself getting stuck in a personalized bubble even more so than Google.