I would think since that was the default Hosted Channel that SBW should first put out an update that checks if the wallet is configured for this particular HC and then warn the user. And the update should also warn the user if they try to add this HC.

As a first-hand example, I had wanted to use SBW for use with RoboSats but then learned that the HC would not work for the RoboSats security bond (Hold invoice). Only then did I learn that the node was basically on autopilot with the Ukranian operator @akumaigorodski out providing relief to his country.

But not all existing users are aware of the uncertain future of the HC.