This is because of two reasons, the first being the Developer wanting to leave xda, the second being the sheer level of bad language to be found in them.
I also want to remind everyone that opening a topic to ask a developers to come back is not helpful or wanted, and they are currently being deleted. And those certain members who feel hat they have been wronged and start rom bashing. will be dealt with severely
Please Feel free to PM me or any other mod with a concern