I find that the policies built on “logic only” tend to break down because they ignore emotion and feelings entirely. People are emotional by nature and our feelings, sense of well-being, sense of justice, sense of oppression, and so on are very real in that they drive how we react and respond to each other. Trying to make a utopia based on people not reacting to their emotions is like trying to make a utopia where people don’t need to eat - it might be nice, but it’s unrealistic.
Imagine if someone came up and kept stabbing you with a rusty pin every day, and whenever you jump away and say “ow!” they roll their eyes and say “logically, this shouldn’t bother you, because it only hurts for a second, you’re not bleeding and I know that this pin won’t give you tetanus. You’re being very irrational right now.” Based on their logic, they’re right, you won’t be measurably hurt, but it still has a real effect on you and you’ll want to do everything you can to stop getting randomly stabbed by a rusty pin every day. Your lived experience is real to you.
Totally anecdotal, but I took escitalopram (the first depression medication mentioned in the study) for years. It worked all right for a while but I was always very low on energy, and after a while it stopped working for me. After some trial and error my doctor and I landed on bupropion (which is also used for ADHD treatment) and it made an enormous difference. I would absolutely believe there is a lot of overlap in treating the two conditions, especially for helping with the the willpower/doing things side of the symptoms (e.g. having energy to do anything in the first place, completing tasks that need to get done, overcoming executive dysfunction, and not getting “stuck” in negative thought spirals).
But of course, it depends on each person and their kind of depression. My doctor warned me that it could make anxiety worse, for example, because the added focus and energy could feed right into someone’s anxiety and make them feel mildly panicked all the time. It’s highly individual.