Have you adopted his macros in your own projects?

No because even if I could identify a benefit to these macros (which I can't in the contexts in which I work) there's a cost to using them.

Macros whuch simply transliterate tokens to other tokens without performing a code transformation do not have a compelling technical benefit. Only a non-technical benefit to a peculiar minority of users.

In terms of cost, the readability and writeability are fine. What's not fine is that the macros will confuse tooling which processes C code without necessarily expanding it through the preprocessor. Tooling like text editing modes,identifier cross-referencers and whatnot.

I've used C macros to extend a language with constructs like exception handling. These have a syntax that harmonizes with the language, making then compatible with all the tooling I use.

There's a benefit because the macro expansions are too verbose and detailed to correctly repeat by hand, not to mention to correctly update if the implementation is adjusted.