even if the person taking the build takes full credit for it even though they didn't make it?
Jup. Just post it on Gallery, or something. Hide your name in it, whatever you want to do. And if you don't do any of those things, you're just silly.
There is two things:- Saving to explore the build by yourself on your own server (not stealing)and- Saving and claiming this is your build (totally stealing)
even if you hide your name in it, that can be deleted
If you don't want people viewing your build, then don't loving publicly host it.