Well, true. I have not disclosed to my job that I was diagnosed with ADHD, and I don't particularly plan to (I wouldn't deny it if it came up, but I'm not going to volunteer the information either). There are more downsides than upsides to disclosure. It's generally recommended to not disclose, especially during the hiring process, unless you truly cannot cope in your job without some sort of ADA accommodation, in which case you must disclose for the ADA to kick in.
Plenty of people with ADHD choose not to take medication though, and I'm having trouble coming up with a situation in which a judge would order you to take it. As long as you're not blaming your ADHD as a reason you broke the law (which you shouldn't, ADHDers may have poor impulse control and bad executive function, but we still need to hold ourselves accountable for our actions), I don't see where it's the law's business if you have it or don't, or medicate it or don't. There are plenty of non-medication coping strategies, including therapy and coaching.
Plenty of people with ADHD choose not to take medication though, and I'm having trouble coming up with a situation in which a judge would order you to take it. As long as you're not blaming your ADHD as a reason you broke the law (which you shouldn't, ADHDers may have poor impulse control and bad executive function, but we still need to hold ourselves accountable for our actions), I don't see where it's the law's business if you have it or don't, or medicate it or don't. There are plenty of non-medication coping strategies, including therapy and coaching.