@JayDeeMinecraft Nope, caves are the same in amplified worlds. But the amplified terrain somehow indirectly makes the caves seem bigger, or maybe they are just exposed more often by the terrain or something. But technically the cave generation is the same.
@PotholedSea40 @JayDeeMinecraft That's correct, the 1.18 biome sizes are final and we are basically only doing bug fixes now. Although I'm sure someone will create a datapack with smaller biomes for those who prefer that.