Perfectionism prevents continuous viability.

"That's not perfect, so we shouldn't do it."

But perfection is impossible, and in the meantime you're frozen and can't do anything.

Different solutions can be better or worse than others.

Just because perfection is impossible doesn't mean improvement is impossible, too.

The right answer when you come across that kind of nihilism is to say: "You're right, it's not perfect! But it's better than the alternatives in use today and it is viable today. Feel free to develop things closer to the perfect ideal, those will work in the system too! In the meantime we'll do this because we think it's viable and has a clear path to iterative improvement."