The fact that they sometimes can't means you can't have someone who is not a software engineer. Otherwise there is no way to verify whether the LLM wrote correct code or not.
They wouldn't be able to verify if the code is correct, but based on my testing, if the work is simple enough, it probably wouldn't matter much.
There are a lot of companies whose modus operandi is basically "build the same basic site 300 times, except with a different colour scheme and logo".