As well as that how the hell has the industry been allowed to diminish to the current pathetically low level if the mighty BALPA have any BALLS at all?
I think it might be connected to the fact that a union really only has the nuclear option when it comes to a fight. Being rather conservative, and ranging from let's-not-rock-the-boat types to an alternative word for cats - pilots are unlikely to back that option.
What do you expect? The BNP aren't in power as most people outside of Lancashire don't like cheap pseudo neo-nazi ideas, if they did, we'd have to roll out the carpet for PM Griffin. By the same token, if Balpa were to bang the drum hard (and remember it's illegal for them to incite strikes) it doesn't necessarily follow that pilots would back it.
Another thing that pussies have in common with cats is that they're hard to herd.