Is it because you're unfamiliar with ADHD or because it doesn't affect you that way? Because procrastination and/or mess blindness is extremely common with ADHD.
Pretty much all ADHD symptoms overlap to a degree with non-ADHD people, though, so it's kind of unreasonable to say that means it's not ADHD related. It's not like developmental disorders compartmentalize themselves neatly into one category or severity of symptoms.
Pretty much, both in intensity and frequency. And when it's something that someone without ADHD might be able to deal with or overcome fairly easily, depending on the issue for people with ADHD it can be much more difficult to do.