Because it doesn't work like that. They're meant to stop people complaining about "MY GMAWD IS EETING MY MEGAHURTZ" and shit like that. And if you do have more than 200 addons... you're fucking crazy. GMod is going to run like a snail. Altough, I do agree the Lua files limit of 2048 is somewhat low. It's like we're going back to GMod 9 (I remember running a GMod 9 server and it just didn't start when there were a lot of Lua files).