Might not be a bug, but are these frozen peaks supposed to be this low?

I was playing Minecraft looking for frozen peaks, and I found some that were at the same level, or even lower, than the other blocks/biomes around it. Additionally, since these are called frozen peaks, normally you'd expect there to be some sort of peak, but it's just a hill that in some cases is even lower other blocks that aren't a part of the biome. Is this intended? I don't really think these should count as any sort of mountain or mountain biome if other hills around it are taller than the mountain itself.