Because if Wam is town, then they don't need to make or support a big shift onto the Somi wagon, they can just let him be yeeted and not have to worry about. However, you see people like Synch, who literally in their post before they Vote Somi said FoS Wam, jump onto Somi, when it would make more sense to go with your read and take the easy excuse of Sabrar told me to put my vote where my mouth is. Instead we wake up to Sabrar dead. Simplest solution to all this is Wam was scum and had his scum buddies save him last moment and they killed Sabrar because he would have been onto them.
You have causality backwards. Somi wagon came before wam's did. If anything, both somi and wam are both counterwagons to Chaco or Frozen. Here's the last couple of VCs:
1.8
Fontisian (2): Wam, Dark Horse
Chaco (2): Kary, LaserGuy
FrozenFlame (2):, BoomFrog, Sabrar
Wam (2): FrozenFlame, Malakandra
Kary (1): Synchronicity
Somitomi(1): Chaco
Laserguy(1): Fontisian
1.9
Chaco (4): Kary, LaserGuy, Wam, Somitomi
FrozenFlame (3): BoomFrog, Sabrar, Malakandra
Wam (2): FrozenFlame, Malakandra
Fontisian (1): Dark Horse
Kary (1): Synchronicity
Somitomi(1): Chaco
Laserguy(1): Fontisian
1.10
Chaco (4): Kary, LaserGuy, Wam, Somitomi
FrozenFlame (4): BoomFrog, Sabrar, Malakandra, Dark Horse
Wam (1): FrozenFlame,
Kary (1): Synchronicity
Somitomi(1): Chaco
Laserguy(1): Fontisian
The abrupt swing to somi/wam begins here.
1.11
Somitomi(5): Chaco, Fontisian, Synchronicity, FrozenFlame, Dark Horse
Chaco (3): , LaserGuy, Wam, Somitomi
Wam (3): Sabrar, Pythag, Kary
FrozenFlame (2): BoomFrog, Malakandra,
1.12
Somitomi(5): Chaco, Fontisian, Synchronicity, FrozenFlame, Dark Horse
Wam (5): Sabrar, Pythag, Kary, BoomFrog, LaserGuy
Chaco (2): Wam, Somitomi
FrozenFlame (1): Malakandra,
1.14
Somitomi(7): Chaco, Fontisian, Synchronicity, FrozenFlame, Dark Horse, Wam, Boomfrog
Wam (5): Sabrar, Pythag, Kary, LaserGuy, Somitomi
FrozenFlame (1): Malakandra,