An autocratic country could easily spread propaganda in the democratic country, because of “free speech” rules that most democratic countries have, but a democratic country cannot easily spread its propaganda in the autocratic country.
An autocratic country can buy an election in the democratic country, but the democratic country cannot easily coup an autocratic country.
Are all democracies are doomed to fail?
Is the future of humanity, autocracy? For the rest of humanity’s existence?
Autocracies seem like flame. Some burn hotter and some colder but its not really sustainable because eventually they will run out of “fuel”. They also will cause harm to everyone around them if big enough and at least concern for neighbours or if they have access to things that can easily cause harm, even if they are small.