https://www.youtube.com/watch?v=im7elh5O76c

Will you ever add the new menu UI that is being added in bedrock 1.17?

Hi! Once an official version with a new UI is released I'll consider the viability of implementing the UI on Java depending on the complexity of the new UI and the Minecraft Java Limitations.

There is also a mod that changes the world creation menu to a more modern bedrock-ish look. (Haven't played bedrock since I received the free copy so idk)
https://www.curseforge.com/minecraft/mc-mods/modernworldcreation