[redox99]

That's probably the right distinction.

If copilot allows you to type

// source code of linux kernel

And you get the whole code, then I would consider it unoriginal

The same way your movie example, if you told it

Avengers Endgame

And it gave you the whole movie, it would also be. But what if you type (like with DallE) Spiderman fighting Thanos and you get something different, but that resembles some Endgame scene. Would that infringe copyright, be fair use, or what?

[Adrox]

Try to publish anything with a character looking like Spiderman, Thanos, IronMan, Captain America and see what Marvel does to you…

[redox99]

There are many videos like that on youtube and they seem to be doing fine

For example

https://www.youtube.com/watch?v=u8LvcJoAnms