Yeah, Zect's problem was always that he is selfish, arrogant, and inexperienced. It's another reason why this world makes no damn sense, why would you anoint a literal child as the "Hero" then send him off to complete high level tasks with no mentorship or guidance.
Disagree. The TL is doing a great job keeping the tone of the series by adding western memes and jokes. It would just be another standard trash harem isekai if they did a more faithful translation.