You’re above average. Having a minimum of reading comprehension already qualifies you as a mod. You don’t need to know much about a given topic to mod the obvious trolls. But… you’re only one person, no matter how fast you read or write, you have a limit, and you shouldn’t go above it or you end up halfassing the job, or what users call “power tripping” (not taking context into account, blindly relying on user reports or votes just to get things out of the way, etc.).

While I can see pictures in my mind’s eye, my thoughts are generally visualizations of words themselves.

There were some interesting discussions about imagination, aphantasia, internal monologue, and different ways of internal perception on Reddit… they’re likely gone now (at least for my part).