A few new GBA games, namely DKC...

[A Black Falcon]

. Most of them did suck.

No, they did not. I can't think offhand of morethan a couple bad GB Nintendo games... almost none of the ones I have are bad, for sure, and I have a lot... SML, SML2, WL, WL2, Kirby 1, 2, Block Ball, and Pinball, Zelda - LA, Donkey Kong, Mario Bros. Deluxe, Yoshi, Mole Mania, Kirby Tilt n Tumble, and Ken Griffey Jr. Presents Major League Baseball.
Not to mention 2nd party or Nintendo published ones, including Donkey Kong Land, Super RC Pro-Am, Pokemon Red, Bionic Commando - Elite Forces, R-Type DX, Warlocked, Zelda - OoA, and Zelda - OoS.

Of those, the only ones I'd say are bad games are Pokemon and Ken Griffey Baseball. Not exactly a lineup of bad games... And some of those are extremely, extremely good. In that list I'd put Wario Land, Bionic Commando Elite Forces, Mario Bros. Deluxe, the two Zelda Oracles games (Ages is better... actually maybe only Ages deserves to be here but they are really one game, not two), and Kirby's Dream Land 2.

No, Nintendo published good GB games.

but it sounds like a pet peeve of yours how you keep mentioning it whenever you talk about it.

I don't know... I really love Wario Land (despite the fact its too short and easy) and wish that it'd just been called Wario Land... putting 'Mario Land 3' must have helped sales, but it doesn't have Mario in the game so it doesn't really make sense as a title...