Isn't it obvious? The problem is this: if the mafia insists on not letting the town get any clues, then we need to take matters into our own hands and create those clues ourselves. The Master has made it clear that he doesn't intend to do that. You're willing to execute Mental, but who else? Well, let's say I am. No one else has spoken up, and there's no advantage to be gained by targeting the Master. What other candidates were suggested, the inactive ones? But the Master doesn't even want to execute them; he doesn't want to execute anyone, and that goes against what I want. Is it acceptable for a player who ruined today's discussion with his posts to skip a day? In my opinion, it's not, and that's why I'm executing him now, not just for being active, as some people seem to think. In short, if the Master doesn't change his mind, neither will I. If you think executing the Master is just for show, we'll see. Either way, the town will get information from the execution. If he continues to stall and hesitate, he'll just end up with another corpse without any clues for the next night.
Therefore, executing the Master seems like just an "execution for information." Master, if you're mafia, you've deceived me, congratulations. If not, then... you see where the discussion is going. They're not giving us any breathing room.