Not necessarily. I had trouble with this for a while, but SNG bubbles are very different from MTT bubbles.
MTT bubbles can be generalised in that you can say 'playing very aggressively is usually correct'. This is because of the huge difference between payouts - first out after the bubble will pay many hundreds tines less then first place in a decent-sized MTT, therefore (a) we shouldn't be so fearful of bubbling and (b) we want to build a stack when we're ITM so we have a greater chance at making a run for the big final table payouts.
SNGs are different. Let's assume the 6-seaters GKB is referring to have a 70/30 payout (I don't know what they actually pay out 'cos I never play them but it can't be far off this). First place now only pays out just over twice the amount of second place. Therefore the difference between finishing just ITM (second) and finishing first is nowhere near as pronounced. The difference between finishing second and third, however, is huge.
This is why I say stack sizes should play such a huge part in your thinking. If you have a big stack on the bubble and your two opponents have small stacks and are obviously fearful of busting in third, you can play it almost just as you would play an MTT bubble - raising on the button with two cards because you're very unlikely to get played back at, and even if you do get played back at and end up putting a shorty allin, you can either win the showdown and bust him, or if the worst case scenario happens and you lose (the combined probabilities of someone playing back at you and you losing a showdown is tiny in these situations though), you're still in the game.
If you're in the same situation and one of the shortstacks, you have to be more defensive though. You can't raise/push so liberally into the bigstack unless the blinds/stacks dictate that you have to simply because he can bust you but you can't bust him, and he is likely to have a wider calling range. You have to play reasonable hands as you get them though, and you have to apply pressure to the other small stack.
I guess what I'm trying to say is that while MTT bubbles are often more about completely untamed aggression, especially at the right tables, SNG bubbles require more selective and more controlled aggression. Bubbling in an MTT is not nearly as much of a disaster as bubbling an SNG is.