A person with no followed studios should not see the “projects in studios I'm following” section:

The same should apply if a user is not following anybody, and/or if his followed users did not love any projects.
Also on a userpage, the same should apply for shared and favorite projects, followers, and following. Shared projects might want to say no projects yet, to avoid confusion among new scratchers.

I think the plan is to have a link to the respective explore pages in empty sections.