There are a few ways:

1. 2d icons are easy to generate
2. there are ways to generate 3d models
3. there are texturing plugins using StableDiffusion to do it fast and easy
4. the text AIs do decently with the coding
5. UI can also be generated easy enough.
6. audio AIs are pretty good but once the main one comes out like theyve been talking about it should be able to do music, sound effects, dialogue, etc...
7. Debugging is also really useful. You can ask it why you are getting an error in the engine and it will suggest reasons. You can go back and forth with it to debug
8. using it so conversations with NPCs arent the same dialogue all the time
9. it can help write the story
10. it does great for spellchecking and grammar checking and everything else when you translate to another language.

I'm sure there are plenty more but these are the first 10 I can think of