The assumption of "just generate it" is doing a lot of work. There's a lot of assumptions that an LLM produced program will have the same guarantees that a closed source program has. You don't know about licensing because most courts haven't decided on it yet. The enshittification would most likely happen on the LLM provider end. You also wouldn't get the benefit of other people's eyes on the software. You're getting none of the benefits of open source with the consequences of closed source.