So, under the ruling above, if someone plays a monster that has support (monstertype), that blocks the horde ability for that type of any monster underneath it [except for use by Belkar]?
Example, starting battle size 2.
Card A; Goblin Ninja (support, goblin, for Ambush)
Card B; Redcloak (Leader +1, Support horde: Goblins).
If Card C is something that would support a goblin [a goblin or roach], it supports the Ninja, not Redcloak, and thus does nothing to the battle size through Supporting?
Myself, I think it's overkill in terms of nerfing horde.