Thank you for posting this. And since these are all basically just anecdotes, I would also like to add mine. I got hooked on anxiety pills after a diagnosis (not the same thing as ADHD, but still), and the withdrawals were genuinely the worst things I've ever faced. Like I wouldn't wish that on my worst enemies. With drugs, especially habit forming ones backed by Big Pharma, you should always be on the side of caution.
Moreover, some of the comments are literally about starting drugs a week or a month ago. God forbid, the long term effects could be entirely different. I started struggling with my dependencies after about a year or so.