I really like that the MC is an old dude that knows nothing about isekai or anime, I haven’t seen such a premise before so it makes the tropes seem fresh. The dialogue and interaction has good bones but is somewhat crippled by the “editing tool” we all know and hate. Constantly repeating descriptions, irrelevant descriptive language, etc.
Everytime the MC teaches someone he compares it to an agriculture lesson, Everytime usop speaks he’s trembling in his boots, luffy wants meat, zero is lost, etc. these tropes are good to introduce the character to the reader but they should not be the core personality traits of the characters.