Did any of those countries become particularly high quality places to live after the fascist regimes fell (compared to peer countries that didn’t go through a fascist phase)?

If the answer is “no, Italy and Germany and so on are not particularly notable compared to their neighbors”, then it sounds to me like accelerationism is bunk, and what you get after fascism is more-or-less what you would have had anyway if all that suffering had been avoided.

We like to believe that every dark cloud has a silver lining, that what doesn’t kill you makes you stronger, that everything is happening according to some plan or pattern that’ll all make it work out in the end, etc, etc. Sometimes that’s true, but often times its not. Sometimes bad things happen that didn’t need to happen, for no good reason, and people get hurt and die and nothing good comes of it. That’s life. Sometimes its ugly and there’s no point to what happens.