Why do lispers believe that scheme can't introduce bindings? Every scheme has a lower lever hygienic macro facility that allows introducing bindings. R6rs has s

Why do lispers believe that scheme can't introduce bindings? Every scheme has a lower lever hygienic macro facility that allows introducing bindings. R6rs has syntax-case. Others have explicit/implicit renaming or syntactic closures. Hygiene is opt-out (except maybe in explicit renaming), not opt-in like in common lisp. That is, IMO, a good thing.