Yes, To a point I'd agree, although the aim of the Pigs from the outset is to become the new elite. What they are very good at is hanging onto the coat-tails of a successful disruptor to get themselves close to the new seat of power before finally emerging as the elite.
In some cases they will wait for the death of the disruptor, in others they will overthrow him (in Animal Farm, the other pigs either drove Snowball away or killed him). This is one of the reasons why clever disruptors always keep their followers in a state of permanent fear and at each other's throats.
A policy which can of course backfire, or leave no succession at all....