This macro system is very powerful, if kludgy, but it's not the final version of the system. Macros 2.0 has been in the works for a while now and will eventually have a much nicer syntax for macro definitions. When Rust 1.0 was gearing up for release the team (rightly imo) decided that launching then with known-imperfect-but-usable macros was a worthwhile trade-off.

Rust's macros are unpleasant to write and debug but very nice to use. The language is also much more expressive than C so I don't find myself needing to (ab)use macros quite as often.

Of course lisp macros are on a different level but the languages are massively different so it's not necessarily a super fair comparison.

One issue with macros is that they are currently breaking most IDE integrations.

It was designed and implemented by some huge Racket fans, incidentally...