You're semantically right, but also missing the point. The expense of getting to deterministic builds is large - You have to take great care in your build infrastructure and scripts. The benefits are also large, and worth it.

Once you've gotten to deterministic builds, the expense of getting to reproducible builds is small; Typically days worth of work as opposed to months. The benefits are very different, but far from insignificant, and almost invaluable from a security perspective.

If you're going to do deterministic builds, go for broke - Do reproducible builds.