No way to customize armor layer textures based on custommodeldata

Hello, all item/block textures can have predicates for custom model data, why doesn't this apply to worn armor? This is a big limitation affecting many custom item makers/ texture pack artists. I'd be extremely grateful if armor pieces were to support predicates.
Here are other people with the same issue:

https://www.reddit.com/r/MinecraftCommands/comments/c0xjtm/how_to_add_custom_textures_for_armor_with_custom/

https://www.minecraftforum.net/forums/mapping-and-modding-java-edition/resource-packs/resource-pack-help/3020365-custommodeldata-with-armor

https://www.spigotmc.org/threads/custom-armor-textures-based-on-custom-model-data-or-damage-value.449405/

https://gaming.stackexchange.com/questions/385445/can-custommodeldata-nbt-be-used-in-armor

https://answertowolrd.com/arqade/can-custommodeldata-nbt-be-used-in-armor/

https://feedback.minecraft.net/hc/en-us/community/posts/360056255091-Custom-armor-models