But if as you said we know that "No one reads the DMG". But the DMG has solutions. This means the DMG isn't serving the community.
Again, "the community"!!!!!!
If you read the links I supplied, I went into detail on this. Since this was your reply ... I am guessing you didn't. So as a public service, here's the excerpt-
(TLDR- it's a joke.)
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Alas, it appears that a few things may not have been readily apparent to everyone. The primary one is the refrain of, "No one reads the DMG." Now, there are many people that take that quite seriously. If no one in the history of ever has read the DMG, then what use can it be?
As such, and with an exceedingly heavy heart, I must now report to you the truth- there are, in fact, people that have read the DMG. For example, the people who wrote it (the DMG was not, as I previously reported, written by the mad mage Abdul Alhazred ... my researchers will be flogged until performance improves) probably read what they were writing at some point. And I must state that I might have read it at some point as well, given that I was providing pinpoint citations to actual pages. It might also happen that people may have looked up things like ... oh, how magic items work, or the Oathbreaker class, or ... you know ... stuff. So why did I write that, and why do you keep seeing this refrain?
It's a joke.
It's been a joke for a long time. At this point, it's just a callback. It refers to the fact that people on enworld will refer to rules and "how to play" and debate it endlessly, without realizing that the issues that they are talking about are actually covered in the DMG.* Of course, this isn't just true with the DMG- I remember a post that was six years after the publication of the PHB telling us that there was an option for customized backgrounds, and people still can (and do) argue about the effects of spells or how to multiclass mostly because they haven't read the text of the PHB recently. That's ... that's just part of the D&D experience. As I wrote before, on this topic, the reason why this tends to happen even more with the DMG is the following:
1. Generally, the DMG of most editions tends to be under-read.
2. The genius of 5e is that it appears similar to prior editions; the problem with 5e is that it isn't the same as prior editions.
3. Most people assume that (other than things like magic items) everything they need is contained within the PHB.
4. A lot of people still learn to DM by playing; so when they first start to DM, it's not like they read the DMG cover-to-cover.
5. Since so much of the DMG is filled with tips and variant rules and ideas for building custom worlds and adventures, a lot of people assume that it is stuff that don't need or won't use and never bother really digging into it.
6. If you don't know what's in there, it can be hard to find (the 5e index issue).
*Much like the truism that anyone that complains about someone else's grammar usage will inevitably make a grammatical error in the complaint, so too is it true that anyone who attempts to list a lack of features in the DMG will inevitably and accidentally list something that is in the DMG. ...or so I hear.