Hammering doesn't guarantee a win for scum. I think the assumption that scum would hammer town!Hydrad here is misleading.
I'm with this. I'm assuming there's an SK since there was some double deaths. Or if there is a vig its still not safe for scum.
So.... couple thoughts.
1) If there is an SK, the money play here for Mafia is to get an SK lynch, closely followed by the 2nd place finisher - getting a Town lynch.
2) If there is no SK, the money play here for Mafia is to get a Town lynch. Possibly including the additional....
3) If there is a Vig, then from a Mafia perspective, right now, specifically in regards to this situation, the situation is the same as the first one (with the SK).
Any which way you look at it, Mafia either knows or doesn't know that there is a SK (or Vig). But they (assuming) don't know WHO that potential player is. If it is Town!GalzHydrad - then hammering them literally covers alllllllllll of their optimal courses of action (just as it would if "Town!Anyone" was on the block right now).
Additionally, grasping at ridiculous notions like this offers an inherent upside for Skum (assuming now again that it is Skum!GalzHydrad)... it does exactly what Skum would want in this situation - draws out a ton of time and gives them the best chance of forcing a scramble during the last absolute minutes of the day.