There's probably some selection bias there. Many people with ADHD aren't so proud as to announce to people that they're on medication. It wouldn't surprise me

There's probably some selection bias there. Many people with ADHD aren't so proud as to announce to people that they're on medication. It wouldn't surprise me if the engineers who told you they're on meds are just brogrammers who just take the stimulants for performance rather than to just feel normal. After having spent over a decade in the field, I benefit a lot from taking medication. I've been diagnosed with ADHD twice independently, and was initially opposed to medication. At this point in my life, I simply can't recapture the drive I once had that helped me overcome my dysregulated attention. My meds have helped me to not burn out.