When San Andreas came out, Rockstar didn't care about unofficial multiplayer mods, cause why should they? Just promotes the game and keeps a userbase.
But now Rockstar is earning $$$ with the multiplayer, there is a reason everything is getting more expensive and less useful with every DLC, the reason is called cashcards. Now, they will never let anyone touch their multiplayer and make another one without their own wallet attached to microtransactions.
Get used to it, it's not 2005 anymore...
Oh btw, anyone else having trouble with matchmaking, lobbys, joining etc? I need at least 3-5 minutes from game start to finally being in a multiplayer lobby. Joining friends in other lobby often fails for a lot of reasons and the handling of large lobbys is a pain in the ass (crashing, merging with 1 player lobby, infested with lvl 1 morons).