Also amazing how my party has been defeating dragons left and right as if they were some low level kobolds.
Yeah, this is just another aspect of how high level D&D goes to shit. It can be sorta explained away in Pools by the fact the world has been torn asunder, and you aren't in the "real world" anymore, but usually it is just a given. Random hordes of Dragons and Vampires wandering maps, that could have wasted Phlan, Zhentil Keep, and the entire Moonsea region in a week during Pool of Radiance (where the Big Bad is a Dragon, and a Vampire is another Big Bad).
This is usually why high level campaigns got shifted to a managerial role with armies, and the odd adventure to some hell island, or other dimension. By the end of Pools and Queen your characters would be able to challenge God's.