I have seen communities where every member is a mod. In order to enter the community a vote takes hold that decides if you can be a member. The decision is usually based on a majority ruling, but veto power is granted to every member.

The idea is that you can find the community online since it's public, petition for your membership presenting your argument and other social media accounts you have.

Then, members judge if you are going to be a suitable member of the community, if you are going to respect the rules of the community, and cast their votes. Often participation is low on votes, someone vouches for you and a few other people review your accounts to make sure you are not a threat.

Sometimes there is a probation period where you have some power like posting on the community but are not fully fledged mod. Other times you become a mod from the start.

Banning members sometimes is necessary, the process needs to be more strict, maybe set participation requirements and allow for enough time for anyone to cast their votes.

It's important to keep in mind that allowing everyone to weigh in on decisions does mean they are going to, most people don't have the context or the time to, but the community needs to remain functional. For these reasons, vote rulings need to be decided on participation and not body size.

Last but not least, my experience is that those communities are much more pleasant and productive to participate in. Not being doxxed on every comment you make, and people actually making an effort to understand your argument, is a game changer.