The question remains: Why this enormous efforts to kill FeatherCoin? Who's so afraid of FeatherCoin? You only fight what you fear. You only fight what might threaten you (in the future).
Probably someone that wants to discredit alt-coins in general. Might have some kind of interest in harming litecoin, or short interest in any of the alts (terracoin, chinacoin, yacoin, etc)
It's not the first attack. I'd point to BBQCoin, for example, or CoiledCoin.
Actually, it's not impossible it was LukeJr's doing this time too.
Anyway, Feathercoin is more uncreative garbage. At least Yacoin uses a new PoW library. Feathercoin is a self-admitted ripoff of Litecoin. It's the Bytecoin for scrypt.