That's a shame, because there are plenty of use cases where testing a shallow render makes much more sense than fully rendering the component—for example, when you're wrapping a third-party library and simply need to test that the correct props are being passed, instead of testing the library's functionality.

Usually you can do this by mocking that specific library out at the module level. E.g. Jest has functionality for this.

Sure, but using Enzyme has been easier and far less brittle in my experience by being less reliant on hacky, library-specific mocking techniques. (Then again, I suppose you could argue that Enzyme is itself a giant hack, but it worked very well for me in the past.)