Point 1) Mason generally means 'confirmed town alignments of all masons in the group to all masons in the group'. So I took DS' mason-claim to mean that, and will continue to do so until he tells us otherwise.
Point 2) If both masons claim, town still doesn't know their alignment; only that they're the same alignment (assuming that they are confirmed, as noted in Point 1, above)
Point 3) Scum, however, knows their alignment (assuming a standard scum ratio, a scumgroup of three players would know beyond a shadow of a doubt that the masons are town, unless riceballtail has five scum in this game, which isn't likely.
Point 4) Scum can use that information as they see fit. They could decide to keep the masons alive in order to gain a WIFOM-fueled mislynch, or they could decide to kill the masons, depending on whether the masons appeared to be competent players. DS, from what I've seen, is hardly a threat to the scum if he's town, but the partner could be myself, or Panzerjager, or some other competent player. If the scum decides that the masons are not a threat, they won't kill the masons; instead, they'll kill whomever they suspect of being a cop or a doctor or what-have-you, and now are more likely to hit because they know two players who
Conclusion: In essence, revealing the name (and to a lesser extent, the title, as it might force the other mason to fakeclaim or reveal his role before it's advantageous to him) gives information to both the town and the scum, which is always a double-edged sword. In this case, the extra information clearly helps scum, because it better informs them on how to make night-kill decisions and on which mislynches to push, but
DedicatedScribe (3) - Panzerjager, Trumpet of Doom, totallynotmafia
dramonic (0) -
kunkstar7 (0) -
Limerickx (1) - Kunkstar7
lobstermania (1) - dramonic
MacavityLock (0) -
Panzerjager (0) -
peanutman (1) - DedicatedScribe
Phlight (0) -
totallynotmafia (2) - lobstermania, peanutman
Trumpet of Doom (1) - Limerickx
Wolframnhart (0) -
With 12 alive, it takes 7 to lynch.