Their whole argument was around body builders not losing fat when fasting, so if you're right, this is just irrelevant. No one expects people to lose fat when they're not caloric restricted.
A lot of people seem to be disagreeing with you but I definitely agree with what you said.
I too have ADHD and I hate it when I see it being treated as a crippling disability. It's really not. ADHD is much more common than people would think. As for everyone, people with ADHD learn to cope with their weaknesses and play into their strengths. For a person with ADHD it's about finding what works and doesn't work for them, not about shaping the entire world around them to make them fit. It will only make them feel worse.
I learned to do it and I'm seen as a respected member of my team today. I am seen as somewhat of a quirky oddball too though with how I always do things, but nothing that can't be solved by just being positive and laughing with your colleagues. They'll treat you with respect.