As for why the last inheritor of the "Life Tree" school wizard, the "Snake-man" Hibekrite, was hunted by the Silver Knight of the Dawn Church and eventually died in the "Rock Giant" that had reached the offshore range?
Combining the notes' explanations and what Aiven has learned about the current extraordinary ecology, there is a more accurate judgment than the "Snake-man" himself.
Just like most changes require a process of accumulation from quantitative change to qualitative change, the relatively balanced extraordinary ecology today was not established overnight. It is the result of mutual strategies between various forces over decades or even hundreds of years.
Perhaps one day, when the balance of power is disrupted, the world might once again usher in a new reshuffling.
