One might point out the yale study that shows we don't have democracy, but if that's true, idk how one would implement a democracy that doesn't get co-opted the way ours has. Most of the ideas I see are not actually democratic. There's a lotof "well, democracy would work if only people / ideas that agree with my correct political views should be allowed to power" which isn't democracy, it's authoritarianism. Plato established a long time ago that benevolent authoritarianism is preferable to democracy, but the problem is humans aren't really good at implementing it. When authoritarians of any ilk get power, they tend to step on someone, no matter how good their intentions are.
[0] https://www.youtube.com/watch?v=6RWsHLvBntg In this interview Megan Romer, who is basically party leadership, explains 'Authority in the DSA is when we vote at the convention every two years'. The lack of structure is extremely ripe for bad actors.