All Top Writer means is that you have a niche or niches and use certain tags frequently. Some people get Top Writer status by putting a particular tag on all their stories whether or not it's appropriate. You lose the badge unless you keep cranking out stories with that tag.

The real top writers are the ones making six figures on this platform every year. They're not necessarily the best writers, just the ones making the most money. The badges are to motivate people who aren't earning a living here to keep writing.

The badges are nice to get, but they're more about quantity than quality.