A lot of people don't understand that ADHD is a disability, and things are only disabilities because society says they are not normal and normal society doesn't allow for them without assistance.

She is basically saying the same as telling a person with MS that they just need to try harder to just get around like everyone else who is too lazy to walk rather than relying on an expensive walker, cane, or wheelchair because the doctors who prescribed it are just in it for themselves. Sure some could eventually get where they're going by force of will alone, but it's not anywhere near the same as just being lazy.

Either that or modify all of society so that no one has to walk/do memorization for exams by making all tests practical knowledge test instead that are easier for people with ADHD.