This was in the US, west coast, about 7 years ago.
I'm not entirely sure the company did it purely for ADHD, I think possibly because they knew 8hr meetings 5 days a week were a boring, slog for anyone and they at least acknowledged that one could fidget and still pay attention.
edit: Sadly as with most things in the US, they got acquired by some megacorp and went to crap. Bunch of people I knew laid off. I don't even think the office exists anymore.
Same, and for every voter they might actually lose they'll replace it with heavier gerrymandering and kicking opposing voters off rolls.