Mountain biome generation as a whole rarely reaches and exceeds Y180.

For the most part, the lower elevation throughout the world, following the older 1.17 generation, at around Y60 is far too dominant. Through my research, the Y60 flatter terrain is about 60% to 70% and the Y120 and higher is 30% to 40% of world generation, roughly speaking, worlds will vary. Due to this, the sense of vast greater terrain features hugging/encompassing around the player as they stand in a Minecraft world is far less and even rare.