Pros and cons about buying Xenforo

Yes it is. It's called "remove from public view" in the moderation options when you go to moderate a post/thread.

Thankyou!

Yes you can soft delete.

You can even soft delete from the posts themselves, see for yourself:



Welcome to xenForo.

I believe Xenforo has soft delete as default. You can give certain members groups permission to hard delete based on permissions.