Honestly if the world building doesn't get fixed in like the next 2 chapters (someone made sure that high tier magic was restricted, new mages only learn how to use magic tools and low tier magics) then I am outta.
Things where high tier magic can be used day to day: mining, healing, forestry, keeping other countries in check (if a high tier spell is even comparable to a surface missile than that's a detergent from other countries to invade), not to mention apparently there are beasts (?) in this world as well surely you need firepower to kill those.