How did the plot of the game end? (Days Gone)

Colleague subject. THERE WILL BE SPOILERS !!!

Passed ALL storylines 100%, didn’t just collect postcards and missed 3 Nero voice recorders (found all injectors).
And what comes out in the remainder - the colonel moved (as it is not interesting - there was not even a boss at the end, even with Skizo it was somehow more lively), all the camps are friendly, there is even a hint that the RIPers "humanized" - Liza (it seems so her name was that bald girl - a teenager) - comes to the Lost Lake camp and says that he wants to trade, you show a bag of freaks' ears - which means that RIPers no longer imitate freaks, but like everyone else is trying to exterminate them. Although at the same moment the remaining unbeaten camps (and I still had one) are still hellishly hostile to the GG.
Sarina research does not end with anything, although the last third of the game hints to us that she wants to invent a drug to return freaks to human form. In the story, Deacon and Sarah are going to move to Cloverdale, where it all began - to continue research there and still find a cure. And nothing about it ...
Further - the story itself, about the fact that the virus is the development of almost Sarah herself, in any case - her institute - mentioning with hysterics in passing - and silence ...
And the end of the plot "he is looking for the lost wife "- Deacon finds a suitable ring for Sarah - and? And they just won't even show us how he hands it over?
Then - OBrien's script - he takes off his mask, shows that he is a half-zombie, says that the government knows everything, and ... flies away ... And GG - somehow chuckles, and he doesn't care after 3 seconds - like a goldfish that is it? What about OBrien, what about the mutation of the virus, what OBrien was going to "warn the Deacon" about in their last meeting - what's next?
What about the story of the million-strong freak crowd crawling along Highway 97 (the number could be confused)? Also casually in some of the Nero reports - they say there are millions of them - and ..? Everything?
In general - some kind of mega black hole plot - except for a plot with a mad regiment, well, a plot with a search for a wife - in general, nothing else and nothing ended. Is this normal or is it like in MGS6 - just ran out of money? There, at least the completion (lol) of the plot was presented in the form of pictures and text ("lord of the flies").