Generally everyone has these issues, but with ADHD it's more advanced to a life altering degree. If everyone had it, everyone would need meds to keep jobs and not be depressed etc. ADHD also usually causes issues with dopamine generation, so getting tasks done aren't fulfilling, hurting our willpower to get anymore done. There's much more, but it's kind of a lighter version of people who assume depressed people just need to go outside and do different things etc. Sure, non depressed people get sad or feel down, but they can usually do something about it or get over it much faster. So if you see stuff like this and you know for sure you don't have ADHD, you're probably underestimating the scale.