Sure. Nothing prevents the first crap in the public space, unless you turn moderation on (if the software even allows that).
And that’s only needed if your site’s being attacked by a gang. Which happens. Then either moderating, or just no updates for a day or two, bores that sort and they quit signing up and go away, when they don’t get their fun.
I suggest affirming having read the rules on signing up — at least Rule 1 — to preclude ongoing argument about the rules (e.g. by sock-puppets) when an account is deleted because it’s been breaking the rules.
It says right there in Rule 1 that’s a consequence. Can’t argue with that.
Sometimes a site will start attracting people who enjoy disputation, for a while, til they get bored.
Long argument about the rules is part of that pattern, e.g. the link I posted earlier: Confessions of a Community College Dean: Victim Bullies