The weak cog in democracy is the people themselves. They are easily manipulated.
Tbh I don't think socialism can really work too well without some level of authoritarianism either.
Could you imagine building socialized housing in a town with NIMBYs? I mean you don't have to, that happens now anyway. This is why China has cool stuff. They dgaf about NIMBYs.
The problem is there's no such thing as a noble authoritarian. And even if there were, absolute power corrupts absolutely.
We need a leader who speaks softly and carries a big stick. We got a loudmouth with a tiny penis.