It's also way easier to build a community when the buy-in is clicking a "subscribe" button with an account you already have and are logged into and knowing you can unsubscribe at any time, as opposed to registering another username, giving a random site admin your email, verifying your email, trusting they're not gonna leak your info or password, etc.
Plus everyone already knows how to use all the functionality, and they already have an app on their phone they can access you and posts will appear in the feed they're already checking.
Plus everyone already knows how to use all the functionality, and they already have an app on their phone they can access you and posts will appear in the feed they're already checking.