If you’re running it locally you can set how much variance it has. However, I mostly agree, in that it creates a bunch of trash. This doesn’t mean it has no use though. It’s like the monkeys on a typewriter thought experiment, but the monkey’s output is fairly constrained so it takes much fewer attempts to create what you want. It depends on the complexity of the solution required whether it’ll come up with a good solution in a reasonable amount of tries. If it’s a novel solution, it probably never will, because it’s constrained to solutions it’s seen before.