Looting spear piglin creeper farm

Creeper farm where a zombified piglin does the killing. Snow golems knock the creepers off the spawning platforms with snowballs, they drop into a chamber below, and a single zombified piglin holding a Looting III spear kills them down there. That means no autoclicker, no manual killing, and the looting bonus on every drop. Carpets across the floor are what keeps spiders out, and a spider will kill the golems. You bring the piglin over from the nether in a boat. Java only. It can go on land or over ocean, and the AFK spot sits 126 to 127 blocks above the killing chamber, never past 128. Without the spear the same build makes about 4500 gunpowder an hour, so the piglin is most of the design.

Shear the pumpkin off each snow golem after you summon it and reuse it, otherwise you need all 42.
Do not use buttons in place of the carpets. Spiders spawn on them and kill the snow golems. The creator says slabs are the only safe substitute.
Put a trapdoor in front of the snow golems. A creeper that gets a line of sight on one after being shot will explode on it.
A diamond spear kills faster than the iron one in the video and raises the rate. The spear does not break, because a mob is the one using it.
Use non flammable blocks, storms have burned people's farms down. Bamboo trapdoors or copper trapdoors from trial chambers are the cheap way to get 2185 of them.
A chunk loader will not hold the farm, it needs a player.