An organizational improvement would help, certainly, but my bigger issue is the content of the DMG. There's a reason I described it the way I did: an enormous amount of the so-called "advice" in the 5.0 DMG really does boil down to "you can do X, or, not do X; you're the DM, you decide!" Which would be great advice if it were given, say, once as a concentrated well-articulated burst of advice (e.g. a page-long equivalent of "The DM's job is to make decisions and shape and direct the experience, so for every section of this book, remember you are in the driver's seat: it's up to you to decide what your game is like. If you don't understand the purpose of a rule or section, talk to other DMs or seek out advice for how you would do it differently.") Alternatively, I could see it being given twice, once in a quick blurb early on, and again in a more focused, specific way.
But to keep repeating it, over and over and over, in subtly different phrasing? Pretty bad. Further, the parts where it deviates away from that have better than even chances of being worse than useless, like the aforementioned advice regarding non-combat XP rewards, or, to pick another example literally at random, I randomly happened upon the "downtime activities" section, which has the following gem:
Like...it literally has rules, and then completely undercuts them with just three words!