The word 'similar' is often frustratingly vague. However, crocodiles and birds share a more recent common ancestor than crocodiles and turtles.
But this clearly isn't the use you want to make of this bucket.
The word is nonetheless used. I do agree with you that it is frustrating that the word's usage is historically determined.
Well then the term reptile is somewhat deceptive in evolutionary biology, and based more on some consensus about appearance. Fine. Whatever. The point is that the word metaphysics isn't evocative in that way or any way, except in the context of its historical usage. As such, it cannot inform us in any way about any subject that isn't the phenomenon of its acceptance as a field, and is not even a useful subject heading, being a hodgepodge. We can choose whether to continue to use it, and I don't see why we should.
Here's the new thread for posting quotes, with the usual rules: