This is of course a matter of taste, but I really dislike this approach to magic/alchemy that Sanderson has. He's explained it before in an illuminating article [1] about his classification of magic systems in "Soft" (less explained, more arbitrary) vs "Hard" (more logical, there are clear/mechanical rules), and how he prefers the latter. I respect this, but I dislike it. To me, magic isn't rational or logical, and overexplanation ruins it. I prefer Tolkien's subtle approach that magic is unexplained, part of the song that made the world -- and in fact, to some of his characters "magic" is a puzzling word.
"Like a videogame" is an apt description of Sanderson's approach, and not my thing. Even Jack Vance's magic system of memorizing spells, used in his Dying Earth stories and said to have inspired the Dungeons & Dragons RPG system, is more mysterious and mystical than Sanderson's. Which is the way it should be!
[1] https://brandonsanderson.com/sandersons-first-law/