What do you mean by “moderate”?
If you’re talking about requiring staff approval for all new topics – or all posted replies – or both – that’s extra work on your end. Don’t know if you are solo or have a team of staff users. But slow approval could discourage new participants. There are settings to let you allow established users to post without screening, though:
If you mean moderation as in: keeping an eye on things and escalating problematic posts, Discourse’s community moderation features are designed so you don’t have to monitor every post yourself.