To be clear, wsl 2 lets you interact with the Windows filesystem. I believe you can launch exes in wsl1, but not 2. However, I've never needed to do that. It's definitely not groundbreaking, but it is convenient.
Using it with the new terminal app is nice. It will load and unload the ram for the instance immediately whenever you pop open a linux shell. IMO opening and closing virtualbox/hyper-v takes longer and is clunkier. Overall it reduces friction.