And if some people want to split off and do something different, diversity is a good thing too.
I've studied in democratic reform, and work in civic tech space. There's a book called _Democracy for Realists_ which I highly recommend. It's a wonderful book, but it eviscerates most of what we understand colloquially about democracy. (Or at least did for me)
You are walking around a piece of democracy that is entrenched in "folk democratic theory" -- things people talk about as being the basis of effective democracy. But in democratic theory, folk democracy appears to have much evidence against it, and very few serious academics advocate for it as an explanatory theory. It's telling is part of the glue perhaps, because systems must appear simple and understandable to its participants, or else it can be destabilized too easily :) the works for electoral systems too -- people need to feel like they understand it in order to trust it's outcomes, nevermind if first-past-the-post is truly best.
The individual is very flawed, and democracy might work despite it's individual nature, not because of it. Political parties and identity groups outside the original structure of democracy perhaps stabilize a system that puts decision-making power into a very ineffective unit. (The individual)
Anyhow, it's been awhile since I worked deeply on this stuff (and not as an academic myself), and I might be misspeaking some parts that an academic could correct me on, but I'm sure the general thrust of the above is true :)
There's a reason our highest form of punishment is to isolate. It's not our functional unit of existing. To truly isolate us from others is to punish us perhaps worse than death. So what makes people think the individual should be our highest functional unit of decision-making after millions of years evolving otherwise?
This is something I wonder if western thought deserves to lose its crown over, if it can't course correct.
Disclosure: civic technologist, community organizer, biochemist