I'm not sure if this is intended behaviour or a bug, but this notification has come up three times this week. I've definitely only earned 200 reputation in one calendar year (or, at best, in two separate 365-day periods, one of which just began).
It seems to just award me this badge, both on the main SE and on meta, every time my reputation crosses a multiple of 200.
Seems kind of weird. Does anyone know what's going on here?