He probably has. The majority of people who have a loving brain and don't jerk off to Bungie blog posts agree that Halo is just another over-hyped game with the same damn thing every game.
Yes, I played Halo, Halo 2, Halo 3, and playing Halo ODST with my friend at his house.
It's the same damn thing over and over. The only thing that makes it fun for me is co-op where I can do wacky stuff with my friend.
Halo is made so you can play loving Halo. Blockland is here for Blockland. Like Mobius said, things from Half-Life 2/Portal/TF2 made here are actually balanced normal weapons or they're creative. Every time we get a Halo weapon/vehicle it's always made by some stuffty add-on maker who slams together copy pasted code from other weapons and a stuffty sketchup model and calls it a masterpiece, exception being Azerath or w/e made the Mongoose and Spartan Laser.