Yes, their intention was to be shitty by asking if you were high because the average person is by no means qualified to self diagnose.

Insisting that it's a good idea to ignore people who spent their entire higher education and their entire career studying and treating those issues is exactly the same bullshit antivaxers try to pull and it's dangerously irresponsible.

Mental health is obviously not an exact science; it can't be. There are far too many variables. But, humans are very good at pattern recognition, and someone who has successfully treated dozens of patients with your exact symptoms is much more likely to get it right than some rando using WebMD.