I've been on the wiki for over 3 years, with about half a year of that being staff. It obviously comes from that, but some of it comes from adding so many pictures—each template infoicon is one separate picture.
I'm more of an on and off person. Sometimes I get to working on improving article style and layout, but sometimes I'm working on other things in my life. I mostly contribute in bulk when I have the time to.
Okay, so you did over 200 edits in April 2017 and some more since then, I see. Overall your total has surpassed mine. It's a good sign that you've been here awhile.
Still looking into the request to see how I feel about it. I don't want to make a sudden decision.