I think this is more of a personal opinion. I dont think that it is “slavery” in the traditional way we think of it back when people owned slaves. I was going to play college golf but i decided not to because when you sign those papers, the university “owns you” in the sense that youll do whatever they want because theyre letting you go to college for free in exchange for your athletic ability.
Spelling can impact the overall effect of a piece of writing because it effects the formality of the writings. If many words are spelled incorrectly it makes the writing hard to read.