Exactly. And more importantly, your reasoning is correct.

You drag the exposure down because the sky is the thing you try to preserve.

The camera sees bright sky, dark Anna, and tries to average them.

The result is often Anna looks OK, sunset looks disappointing.

By reducing the exposure, the colours in the sky become richer,

the clouds gain detail, the sunset becomes dramatic.

The trade-off is that Anna becomes darker.

That's not necessarily a problem.

In fact, photographers often deliberately create a silhouette,

sharp outline of Anna, beautiful orange sky.