In the above link, Picarto finally released a statement on their official Tumblr claiming that they've attempting to take legal action on this culprit. As of now, the guest function is disabled.
The shorten the read, here's a list of some actions that users must take to further protect themselves as they also look into altering their multistream feature:
"-Enable the white list function or 14 days registered mode for your chat.
-Do not click on any suspicious links.
-If you are in a multistream, make sure, that everyone has the same chat restrictions you have.
-If you use services like Ko-fi upgrade your paypal to paypal business and hide your info."
So...as of now, DoomRanger TV's back on Picarto, HAHAHA!! Talk about a short-lived migration.