I think you can argue this all you want, but everything I've seen recently, and honestly more than just recently, NFL deep passes has been considered 20 yds+. Every article I've read over the last several years that quantifies "deep" passes and defines the term, defines it as 20+ yds. How that became the standard, idk, but it seems to be. I haven't read past this post, but I suspect you are yelling at clouds basically.