Of course not, but the process of automating deploys (or anything really) makes you think through what can go wrong, and ways to mitigate problems, and put tests in place to make sure things worked, and add metrics, and test your rollback procedure, and so on. A company that doesn't have automated deploys is much more likely to have manual processes for more things than just deployment.

It's not a magic bullet, but in my experience it's a very good indicator of how a company approaches an obvious problem, so you can get a really clear signal about whether or not you'd enjoy working there.