Actually, a thought occurs to me; if they are weapons, what if they're the *least* of this race's arsenal? Like their equivalent of .22 rounds? If that's the case what would their *serious* hardware look like? I mean I wouldn't want to stumble across their equivalent to thermonuclear warheads.
On the flip side, for such an advanced race, you'd think they could come up with a quicker, more effecient weapon than this-- a creature with a really elaborate life cycle, which has to spend hours gestating in another creature, and which can be frightened off by fire,
of all things.
And oh yeah, it can be blown apart by simple projectile weapons as well.