Sure there’s a few bad eggs, even in the Zelda series there’s a couple, but the trend is not in that direction.

Which Zelda games are bad in your opinion?

Tri Force Heroes is bad. You can play it single player or with 3 players, but not with 2. And if you play it single player, you constantly have to reorder your stack of Links, which is a tedious process.

Compared with Four Swords Adventures, which is fun to play with 1, 2, 3, or 4 people.

Adventures of Link is widely regarded as bad by players (although it’s a bit of a cult classic.)

I wouldn't say I've played a bad one, but they did get bogged down in a strict formula for a while. Twilight Princess is where I quit for a while.

Link: The Faces of Evil and Zelda: The Wand of Gamelon

Nintendo didn't develop those.

Consistently making good games != making a good game every single time