Not an answer to your question, but in the Westminster system, the monarch serves this same purpose as well, since there can be no autocrat while the monarchy exists, and the monarch themself is almost assured to be less competent even than the elected leaders, and unlikely to be able to setup their own autocracy.
Not an answer to your question, but in the Westminster system, the monarch serves this same purpose as well, since there can be no autocrat while the monarchy exists, and the monarch themself is almost assured to be less competent even than the elected leaders, and unlikely to be able to setup their own autocracy.