MAJOR SPOILERS. After he manages to save the village from the little earth dragon because of a conspiracy, but at a steep cost and having to finish off an almost dead human (at his request and to save everyone, who remarkably understood more about the MC's personality and character pretty fast at that) in front of the townsfolk to evolve from a kid plague dragon to an evil plague dragon, then kills little earth dragon, saves the town, and soon after leaving that big misunderstanding of him slaughtering the one guy trapped and dying from an earthquake crevice, gets into a huge fight with this weird op evil shape shifting, skill stealing slime that set everything up outside of the town that also seems to have some kind of relation to the (possibly a different?) god's voice.

He narrowly wins, kills the slime, passes out for a few days in a stream of water from a dive bombing of some kind and just decides to leave his trusty partner and essentially waifu poison salamander behind (she grew to love MC by the way, even the monkeys think of her as the boss's wife in their POV chapter). Even leaving his monkey troop behind without even thinking of trying to explain why he needs to leave or even go back to them despite the fact they are all intelligent and cunning monsters.

At least until a further evolution who knows when to control the poison he may or may not even be scattering as a plague dragon automatically yet, as it hasn't really affected anything or any one. Not even a feeble F rank bottom of the food chain mob a cute sand bunny with 4 HP. The salamander is resistant to poison and eats poisons as a food. For what reason would he not try AT ALL to get back to at least her? These are all the things and thoughts he had that happened after him drifting downstream. I don't know why he didn't think or seriously consider going back upstream and following the water to at least sort things out for all these different issues. According to some comments in the chapters even at "the latest ongoing chapters" we don't see the old group again. So that is several hundred chapters from the looks of it at least.

Between those two major points is where I feel the story starts getting much worse. Its like we just had some established characters with some backstory ripped away without a good enough reason to just have him start from all over and alone in a new area.

With the evolution system established as is he can't even pick any of the more good aligned dragon evolutions since it would basically bottleneck all future development, even early on in the story as a baby, and he ends up essentially being forced to go into the more evil paths with much more growth which seem to level up so much easier than the good aligned paths despite how desperately the MC tries to become a good dragon, on top of how the survival seems to frequently hinge on picking evil dragon paths. I had even skipped to the latest chapter (202 at the time) to try to see where things go.

MAJOR SPOILER he becomes an Ourobros around chapter 192 which had a description said something about seeing infinity and going against god or something. A two headed dragon with him being a male head and in control of the body, while the other head is apparently female, and a new entity different than him, doesn't share his thoughts, but is a part of him that he has no control over and it does what it wants, he cannot converse with it properly or feel its intents in any reasonable way. And for some reason his traveling companion that knows telepathy which is basically a universal communication, doesn't even mediate a simple conversation between them (yet?), despite the fact it has before for different characters earlier in the story. His recovery magic related skills split with it, and it doesn't even cooperate with the MC very well. So yea, they share his dragon body, sense of pain, stats, and resources like that. Doesn't that just sound like a terrible plot development on so many levels?

The MC even stated in much earlier chapters how much he would have hated the option of being a two headed dragon and here we are.

and eventual friendship

he becomes friendly with the village, then the village gets attacked, he needs to evolve to stop the attacker, so he kills an ops man who chose to sacrifice himself and evolves and kills the attacking dragon. Then the villagers accuse the MC of being evil dragon and chase him away.

How ridiculous. The MC just killed an enemy who could have easily annhilated the village, indicating that the MC is also capable of destroying the village. But these brain dead villagers had the gall to chase him away, if they really believed he was an evil dragon, then they should be begging not accusing him