This happens in many modding communities - the massive Bethesda ones chiefly among them. Any game with staying power will see popular modders come and go, and newcomers usually arrive on the scene to pick up the mantle, whether it’s to create brand new mods or to take the reins and bring older mods up to date. We see the latter example quite a bit at ModTheSims.
There are plenty of abandoned mods from 3-4 years ago that have since been replaced by better alternatives. And some of the largest scale mods for the game have only arrived in the last year or so.
I wouldn’t worry too much about it.
