The minecraft:guarded_by_piglins may be missing the following blocks:

• quark:raw_gold_bricks
• quark:raw_gold_bricks_slab
• quark:raw_gold_bricks_stairs
• quark:raw_gold_bricks_vertical_slab
• quark:raw_gold_bricks_wall
• quark:golden_apple_crate
• quark:golden_carrot_crate

This may be entirely intentional. But, I do believe it is an oversight because:

• The Raw Gold Bricks are made from the Raw Gold block, which Piglins guard appropriately.
• The item tag minecraft:piglin_loved (controlling which items Piglins will try to grab off the ground) appropriately contains these items.
• Golden Apples and Carrots are made from pure gold.

Note that the Gold Button & Bars are not included, as well. It can be argued to make sense, as Minecraft's own Gold Pressure Plate is not included, either.

fixed