[happytoexplain]

I know you didn't ask me, but I just wanted to say that language is nothing without context. "Less capable" is very subjective and context-dependent, so without more specifics it can't really be "true" or "false" except very colloquially. As for "sexist" - in a void with no context, it's apparently sexist, but that doesn't mean the sentence can't exist in a non-sexist context.