There should not be a problem setting up new threads. Besides, the moderators don't have the facility to stop posters from setting up threads per se, although we obviously have the ability to ban individual posters by flagging IP addresses.
And no one else has reported problems with setting up threads.
To set up a thread, simply click on the "Post Now" option in the right hand side just above the message section, and fill in your own title in the blank "Message Title" line.