How does this use case differ?

People ssh over Tor for the same reason they use Tor for any network activity: To make confidential 1) your identity to the remote host and 2) your activities to your network providers (including your ISP/workplace/etc.).

If you want only confidential content, ssh is sufficient and so is https for web browsing. If you want the other things, you must use Tor or maybe something similar.

I can't really see legal use cases for (1) and (2) might get you fired if the second. 2a is a 'maybe'.