When you read forums discussing ADHD you'll find plenty of stories where people were unable to get medication, because they had to change doctors and the new doctor was unwilling to prescribe it.[0][1] Many of those people will likely have their lives fall apart following that.
Discouraging drug based treatments further is likely going to cause more situations like this. I think what would really help is if mental illness treatment became more specialized. You'd go to a doctor that really knows the illness you're dealing with.
[0] https://www.reddit.com/r/ADHD/comments/antrln/doctor_refuses...
[1] https://www.reddit.com/r/ADHD/comments/lb5gq3/psychiatrist_w...