There isn't any way to mark a room as not-freezable (see Antifreeze for Chat rooms), although I wish there was. Probably the best way to take care of this is a flag on the main site.
Or, ideally, we would actually use the room ;)
There is a rule to avoid freezing the main chat room of a site, but it doesn't identify any particular room as the main room. Rather, the last remaining unfrozen room of a site will not be frozen.
The Duga room is considered an active room since a normal user talks there fairly often. The normal user is actually a bot, but that's an external bot, so Stack ...
The name should be changed to "Soft Wrecks", name on which most people seemed to agree at the discussion you linked to.
Gilles comments that the name change was just forgotten, so hopefully it will be changed soon.
I tried to make a joke about swrecs in reference to Sean Connery on Jeopardy saying "schwords" (like swords) for "S Words" when talking about the category of questions pertaining to "S Words". I failed. Couldn't think of anything pithy -- all the pith got stolen by Robert's answer above. Seriously, "Software Rex"? That's a whole mouthful of pith. ;x
I was ...