I don't really think that there's much ground in complaining about the writing of English server quests when English isn't your first language. You are not the target audience. I don't switch French on in my duty finder and ask my party members to speak more simple French because it's not my first language.

I know it sounds mean, but it's unwise to base perceptions of a game played by millions on your unique experiences; sometimes it's good to cater to others(Hey, colorblind support!), but in your case this could be remedied by... well... reading. And a dictionary, maybe a thesaurus. Or looking up a story synopsis online. Or going to your room in the inn and reading the book therein, that recaps all the quests you've completed for you at your own pace.

Just saying man, there's options.