In what way? As far as I know they have spoken out against TERFs and the like and are themselves not identifying as cis.

Specifically I know they have always argued for a more open and inclusive perspective of womanhood so I‘m unfamiliar on how they would be problematic.

Butler — a pioneering voice in feminism, gender studies, critical theory, and contemporary philosophy — registered as non-binary in California years ago. While their pronouns changed to they/them, they chose to keep their name, a decision, they say, surprised the courthouse clerk at the time.

You’d hope not.