The bug

The "Oh Shiny" advancement can only be triggered if the player does not wear gold armor. However, the description does not mention this, it says: "Distract Piglins with gold". The piglin can be aggressive towards the player for other reasons than not wearing gold (e.g. hitting it, breaking/opening a container, etc.).

To reproduce

1. Be in survival/adventure mode.
2. /effect give @p minecraft:resistance 10000 100 true
3. Wear a golden helmet.
4. /give @p gold_ingot 64
5. Place a chest.
6. /summon minecraft:piglin ~ ~ ~ {IsImmuneToZombification:1b}
7. Open the chest.
8. Throw a gold ingot in the ground and wait for the piglin to pick it up.

Observed result

The advancement "Oh Shiny" is not granted, as it requires the player to not wear gold armor.

Expected result

The advancement should be granted, and not require the player to not wear gold armor, as there are numerous other ways to anger a piglin.