As the saying goes, different professions are worlds apart.
In simple terms, even the most powerful Mage, like Kenneth A. Achizolti the Mist Moon Sage, can't understand why those who wildly swing blades need to study so many techniques for melee combat (perhaps except Jadka Diesel);
Similarly, we can't expect a mighty Legendary Rank Knight like Darian Diesel to understand why Spellcasters can summon storms with a wave of their hand, or conjure fire dragons and ice storms by uttering a few words (perhaps except Jadka Diesel).
The concept of "mutual destruction" and "all methods lead to the source" has never meant that once someone becomes powerful to a certain degree, they know everything. It means that among those who are strong, there might be some resonance in their use of strength and strategic thinking, not that a Mage's proficiency reaching the peak allows them to swing a blade (perhaps except Jadka Diesel).
