I like how they subvert the trope of ancient magic being more powerful
Most other shows would have ancient magic be much more powerful than modern magic and they would've made ancient beings like Qual out to be unstoppable eldritch gods. But Frieren actually acknowledges human adaptability and innovation. It makes sense that after 80 years, people would've built on top of Zoltraak and innovated it so much it becomes base level. Sort of like how Isaac Newton discovering gravity was so revolutionary at the time and now it's just common sense.
Most other shows would have ancient magic be much more powerful than modern magic and they would've made ancient beings like Qual out to be unstoppable eldritch gods. But Frieren actually acknowledges human adaptability and innovation. It makes sense that after 80 years, people would've built on top of Zoltraak and innovated it so much it becomes base level. Sort of like how Isaac Newton discovering gravity was so revolutionary at the time and now it's just common sense.