I think I largely disagree with the assessment that Anet makes a habit of pulling the rug out of it's races, in fact i'd argue that what most people seem to want is a lack of nuance to PoF for some reasons. Yes the gods left, yes they aren't going to interfere, yet people ignore the reasons they left on the basis they were dumb for reasons never properly explained. Kormir goes out of her way to demonstrate how a release of god energy started the entire cycle of draconic awakening, how the fighting between two great powers turned the very land we were walking on into a desert. Hell, you could reasonably subtitle the entirety of Path of Fire as 'The gods were right, you idiots.' as Balthazar staying has only made the situation considerably worse, and Balthazar was on lockdown until a certain Misotheist race accidentally busted him out. This is classic world of cardboard writing, if the gods do something then everyone here is just going to die.
As for the Olmakhan, they aren't really perfect. They aren't even defending their land from Rata Primus really as they are so absorbed in giving things the right to grow that many of them are shoving off for the north. Their nature magic is powerful, but not powerful enough to stop the Asura from demolishing their village. They are only saved when outsiders, one of whom is a Legion Charr mind you, saves them through violence. They aren't pushovers, but they aren't perfect. Their ideology just points out something Anet itself has basically said, while our individual Charr are heroic the Charr Legions at the moment are villain protagonists who are transitioning into a better state of society.
It's pretty much always been that way, and i'v been consistently baffled by the idea that it was otherwise. They're a species with the history and population of the Steppe Hordes with the industrialization and ultra-nationalism of some of the worst fascist regimes, combined with a political system that resembles what I can only describe as inverted totalitarianism, it's like Rome during the Year of the Four Emperors, which is kind of ironic considering it's themes. That's less a society, more akin to mob rule, and the good Charr we met in the base game more often then not tended to be weird outsiders from that culture.
At least to me the Olmakhan were a logical conclusion, like the sun rising and setting, they were bound to happen unless Charr were predisposed to being psychotic.