Beginners Solidity developers love using Ethernal because it helps understanding better how blockchains work by giving them a visual representation of what is going on on their local chain.
When they deploy their first contract, they can right away have a basic UI generated to interact with it.
I actually started Ethernal myself as a Hardhat plugin when I started writing smart contracts, because I had this exact need.

By making the development process easier for beginner and more visual, they are more likely to keep learning and wanting to build things.