As the article itself discusses, pointers to zero sized objects are not necessarily different (they write it is only the case in debug mode).

> I find the post's framing of "it's stored in the borrow checker" to be a bit odd

That's exactly what I wanted to say as well.

I feel like it would have been better to just skip the borrow checker mention and just go "in rust this can not be done reliably ..(section about pointers being the same)"